90142641431 has 16 divisors (see below), whose sum is σ = 95138549760. Its totient is φ = 85172199840.

The previous prime is 90142641419. The next prime is 90142641437. The reversal of 90142641431 is 13414624109.

It is not a de Polignac number, because 90142641431 - 2²² = 90138447127 is a prime.

It is a super-2 number, since 2×90142641431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90142641391 and 90142641400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90142641437) 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, 13028585 + ... + 13035501.

It is an arithmetic number, because the mean of its divisors is an integer number (5946159360).

Almost surely, 2^90142641431 is an apocalyptic number.

90142641431 is a deficient number, since it is larger than the sum of its proper divisors (4995908329).

90142641431 is a wasteful number, since it uses less digits than its factorization.

90142641431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8654.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 90142641431 in words is "ninety billion, one hundred forty-two million, six hundred forty-one thousand, four hundred thirty-one".