202421365310542 has 16 divisors (see below), whose sum is σ = 347205330616320. Its totient is φ = 86702694754968.

The previous prime is 202421365310537. The next prime is 202421365310543. The reversal of 202421365310542 is 245013563124202.

It is a junction number, because it is equal to n+sod(n) for n = 202421365310495 and 202421365310504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202421365310543) 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, 4109886958 + ... + 4109936209.

It is an arithmetic number, because the mean of its divisors is an integer number (21700333163520).

Almost surely, 2^{202421365310542} is an apocalyptic number.

202421365310542 is a deficient number, since it is larger than the sum of its proper divisors (144783965305778).

202421365310542 is a wasteful number, since it uses less digits than its factorization.

202421365310542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8219824935.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 202421365310542 in words is "two hundred two trillion, four hundred twenty-one billion, three hundred sixty-five million, three hundred ten thousand, five hundred forty-two".