142107940 has 24 divisors (see below), whose sum is σ = 321383160. Its totient is φ = 52470528.

The previous prime is 142107929. The next prime is 142107941. The reversal of 142107940 is 49701241.

It can be written as a sum of positive squares in 4 ways, for example, as 9535744 + 132572196 = 3088^2 + 11514^2 .

It is a super-2 number, since 2×142107940² = 40389333222087200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142107899 and 142107908.

It is not an unprimeable number, because it can be changed into a prime (142107941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273025 + ... + 273544.

It is an arithmetic number, because the mean of its divisors is an integer number (13390965).

Almost surely, 2^142107940 is an apocalyptic number.

142107940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142107940 is an abundant number, since it is smaller than the sum of its proper divisors (179275220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142107940 is a wasteful number, since it uses less digits than its factorization.

142107940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546591 (or 546589 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 142107940 is about 11920.9034892495. The cubic root of 142107940 is about 521.8425022612.

The spelling of 142107940 in words is "one hundred forty-two million, one hundred seven thousand, nine hundred forty".