42204040121431 has 16 divisors (see below), whose sum is σ = 44841466800000. Its totient is φ = 39609645649056.

The previous prime is 42204040121429. The next prime is 42204040121437. The reversal of 42204040121431 is 13412104040224.

It is a cyclic number.

It is not a de Polignac number, because 42204040121431 - 2¹ = 42204040121429 is a prime.

It is a super-2 number, since 2×42204040121431² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42204040121431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204040121437) 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, 18594361 + ... + 20740258.

It is an arithmetic number, because the mean of its divisors is an integer number (2802591675000).

Almost surely, 2^{42204040121431} is an apocalyptic number.

42204040121431 is a deficient number, since it is larger than the sum of its proper divisors (2637426678569).

42204040121431 is a wasteful number, since it uses less digits than its factorization.

42204040121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39335166.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 42204040121431 its reverse (13412104040224), we get a palindrome (55616144161655).

The spelling of 42204040121431 in words is "forty-two trillion, two hundred four billion, forty million, one hundred twenty-one thousand, four hundred thirty-one".