40431433440442 has 16 divisors (see below), whose sum is σ = 69037072120512. Its totient is φ = 17578884104320.

The previous prime is 40431433440421. The next prime is 40431433440443. The reversal of 40431433440442 is 24404433413404.

It is a super-2 number, since 2×40431433440442² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40431433440395 and 40431433440404.

It is not an unprimeable number, because it can be changed into a prime (40431433440443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39952008823 + ... + 39952009834.

It is an arithmetic number, because the mean of its divisors is an integer number (4314817007532).

Almost surely, 2^{40431433440442} is an apocalyptic number.

40431433440442 is a deficient number, since it is larger than the sum of its proper divisors (28605638680070).

40431433440442 is a wasteful number, since it uses less digits than its factorization.

40431433440442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79904018693.

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 40431433440442 its reverse (24404433413404), we get a palindrome (64835866853846).

The spelling of 40431433440442 in words is "forty trillion, four hundred thirty-one billion, four hundred thirty-three million, four hundred forty thousand, four hundred forty-two".