402054845 has 8 divisors (see below), whose sum is σ = 510846264. Its totient is φ = 302723584.

The previous prime is 402054827. The next prime is 402054853. The reversal of 402054845 is 548450204.

It can be written as a sum of positive squares in 4 ways, for example, as 3892729 + 398162116 = 1973^2 + 19954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402054845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364944 + ... + 2365113.

It is an arithmetic number, because the mean of its divisors is an integer number (63855783).

Almost surely, 2^402054845 is an apocalyptic number.

It is an amenable number.

402054845 is a deficient number, since it is larger than the sum of its proper divisors (108791419).

402054845 is a wasteful number, since it uses less digits than its factorization.

402054845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730079.

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 402054845 is about 20051.3053191058. The cubic root of 402054845 is about 738.0658310167.

The spelling of 402054845 in words is "four hundred two million, fifty-four thousand, eight hundred forty-five".