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122240131 = 1388710601
BaseRepresentation
bin1110100100100…
…11110010000011
322112000102221021
413102103302003
5222243141011
620044010311
73013011136
oct722236203
9275012837
10122240131
1163001902
1234b30997
131c42c750
141234021d
15aae9471
hex7493c83

122240131 has 8 divisors (see below), whose sum is σ = 131804064. Its totient is φ = 112699200.

The previous prime is 122240113. The next prime is 122240137. The reversal of 122240131 is 131042221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122240131 - 29 = 122239619 is a prime.

It is a super-2 number, since 2×1222401312 = 29885299253794322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122240137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6231 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (16475508).

Almost surely, 2122240131 is an apocalyptic number.

122240131 is a deficient number, since it is larger than the sum of its proper divisors (9563933).

122240131 is a wasteful number, since it uses less digits than its factorization.

122240131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501.

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

The square root of 122240131 is about 11056.2258931337. The cubic root of 122240131 is about 496.2927552746.

Adding to 122240131 its reverse (131042221), we get a palindrome (253282352).

The spelling of 122240131 in words is "one hundred twenty-two million, two hundred forty thousand, one hundred thirty-one".

Divisors: 1 13 887 10601 11531 137813 9403087 122240131