402942154657461 has 64 divisors (see below), whose sum is σ = 578936870830080. Its totient is φ = 248381587584000.

The previous prime is 402942154657459. The next prime is 402942154657477. The reversal of 402942154657461 is 164756451249204.

It is a happy number.

It is not a de Polignac number, because 402942154657461 - 2¹ = 402942154657459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402942154657395 and 402942154657404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402942154657481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1008045340 + ... + 1008444986.

It is an arithmetic number, because the mean of its divisors is an integer number (9045888606720).

Almost surely, 2^{402942154657461} is an apocalyptic number.

It is an amenable number.

402942154657461 is a deficient number, since it is larger than the sum of its proper divisors (175994716172619).

402942154657461 is a wasteful number, since it uses less digits than its factorization.

402942154657461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400994.

The product of its (nonzero) digits is 58060800, while the sum is 60.

The spelling of 402942154657461 in words is "four hundred two trillion, nine hundred forty-two billion, one hundred fifty-four million, six hundred fifty-seven thousand, four hundred sixty-one".