40620244342542 has 16 divisors (see below), whose sum is σ = 81291232294992. Its totient is φ = 13531624179200.

The previous prime is 40620244342477. The next prime is 40620244342543. The reversal of 40620244342542 is 24524344202604.

It is a junction number, because it is equal to n+sod(n) for n = 40620244342494 and 40620244342503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620244342543) 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, 2114306673 + ... + 2114325884.

It is an arithmetic number, because the mean of its divisors is an integer number (5080702018437).

Almost surely, 2^{40620244342542} is an apocalyptic number.

40620244342542 is an abundant number, since it is smaller than the sum of its proper divisors (40670987952450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40620244342542 is a wasteful number, since it uses less digits than its factorization.

40620244342542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228634163.

The product of its (nonzero) digits is 1474560, while the sum is 42.

The spelling of 40620244342542 in words is "forty trillion, six hundred twenty billion, two hundred forty-four million, three hundred forty-two thousand, five hundred forty-two".