40642420262 has 32 divisors (see below), whose sum is σ = 63390200832. Its totient is φ = 19530933184.

The previous prime is 40642420261. The next prime is 40642420333. The reversal of 40642420262 is 26202424604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40642420261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287338 + ... + 1318530.

It is an arithmetic number, because the mean of its divisors is an integer number (1980943776).

Almost surely, 2^40642420262 is an apocalyptic number.

40642420262 is a deficient number, since it is larger than the sum of its proper divisors (22747780570).

40642420262 is a wasteful number, since it uses less digits than its factorization.

40642420262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31492.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 40642420262 its reverse (26202424604), we get a palindrome (66844844866).

The spelling of 40642420262 in words is "forty billion, six hundred forty-two million, four hundred twenty thousand, two hundred sixty-two".