42900821465 has 4 divisors (see below), whose sum is σ = 51480985764. Its totient is φ = 34320657168.

The previous prime is 42900821429. The next prime is 42900821479. The reversal of 42900821465 is 56412800924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33889496281 + 9011325184 = 184091^2 + 94928^2 .

It is a cyclic number.

It is not a de Polignac number, because 42900821465 - 2¹⁴ = 42900805081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4290082142 + ... + 4290082151.

It is an arithmetic number, because the mean of its divisors is an integer number (12870246441).

Almost surely, 2^42900821465 is an apocalyptic number.

It is an amenable number.

42900821465 is a deficient number, since it is larger than the sum of its proper divisors (8580164299).

42900821465 is an equidigital number, since it uses as much as digits as its factorization.

42900821465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580164298.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 42900821465 in words is "forty-two billion, nine hundred million, eight hundred twenty-one thousand, four hundred sixty-five".