402044161 has 8 divisors (see below), whose sum is σ = 424424000. Its totient is φ = 379786320.

The previous prime is 402044141. The next prime is 402044179. The reversal of 402044161 is 161440204.

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-402044161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402044131) 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, 23685 + ... + 36946.

It is an arithmetic number, because the mean of its divisors is an integer number (53053000).

Almost surely, 2^402044161 is an apocalyptic number.

It is an amenable number.

402044161 is a deficient number, since it is larger than the sum of its proper divisors (22379839).

402044161 is a wasteful number, since it uses less digits than its factorization.

402044161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60999.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 402044161 is about 20051.0389007652. The cubic root of 402044161 is about 738.0592932974.

Adding to 402044161 its reverse (161440204), we get a palindrome (563484365).

The spelling of 402044161 in words is "four hundred two million, forty-four thousand, one hundred sixty-one".