402432101 has 8 divisors (see below), whose sum is σ = 420989400. Its totient is φ = 384186880.

The previous prime is 402432089. The next prime is 402432119. The reversal of 402432101 is 101234204.

It can be written as a sum of positive squares in 4 ways, for example, as 18232900 + 384199201 = 4270^2 + 19601^2 .

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-402432101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402432101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402432161) 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, 75380 + ... + 80541.

It is an arithmetic number, because the mean of its divisors is an integer number (52623675).

Almost surely, 2^402432101 is an apocalyptic number.

It is an amenable number.

402432101 is a deficient number, since it is larger than the sum of its proper divisors (18557299).

402432101 is a wasteful number, since it uses less digits than its factorization.

402432101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156039.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402432101 is about 20060.7103812402. The cubic root of 402432101 is about 738.2966060992.

Adding to 402432101 its reverse (101234204), we get a palindrome (503666305).

The spelling of 402432101 in words is "four hundred two million, four hundred thirty-two thousand, one hundred one".