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142041031 = 11235091103
BaseRepresentation
bin10000111011101…
…01111111000111
3100220021102122221
420131311333013
5242330303111
622032233211
73343220536
oct1035657707
9326242587
10142041031
11731a6590
123b69b807
1323573362
1414c1631d
15c70b371
hex8775fc7

142041031 has 16 divisors (see below), whose sum is σ = 162155520. Its totient is φ = 123159520.

The previous prime is 142041023. The next prime is 142041041. The reversal of 142041031 is 130140241.

It is not a de Polignac number, because 142041031 - 23 = 142041023 is a prime.

It is a super-2 number, since 2×1420410312 = 40351308975085922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142040996 and 142041014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142041041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128226 + ... + 129328.

It is an arithmetic number, because the mean of its divisors is an integer number (10134720).

Almost surely, 2142041031 is an apocalyptic number.

142041031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142041031 is a deficient number, since it is larger than the sum of its proper divisors (20114489).

142041031 is a wasteful number, since it uses less digits than its factorization.

142041031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 142041031 is about 11918.0967859806. The cubic root of 142041031 is about 521.7605893123.

Adding to 142041031 its reverse (130140241), we get a palindrome (272181272).

The spelling of 142041031 in words is "one hundred forty-two million, forty-one thousand, thirty-one".

Divisors: 1 11 23 253 509 1103 5599 11707 12133 25369 128777 279059 561427 6175697 12912821 142041031