402130445 has 8 divisors (see below), whose sum is σ = 485084160. Its totient is φ = 320019280.

The previous prime is 402130433. The next prime is 402130447. The reversal of 402130445 is 544031204.

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

It is not a de Polignac number, because 402130445 - 2⁴ = 402130429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402130445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402130447) 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, 209585 + ... + 211494.

It is an arithmetic number, because the mean of its divisors is an integer number (60635520).

Almost surely, 2^402130445 is an apocalyptic number.

It is an amenable number.

402130445 is a deficient number, since it is larger than the sum of its proper divisors (82953715).

402130445 is a wasteful number, since it uses less digits than its factorization.

402130445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421275.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402130445 is about 20053.1903945482. The cubic root of 402130445 is about 738.1120886195.

Adding to 402130445 its reverse (544031204), we get a palindrome (946161649).

The spelling of 402130445 in words is "four hundred two million, one hundred thirty thousand, four hundred forty-five".