403425144 has 32 divisors (see below), whose sum is σ = 1120626000. Its totient is φ = 134474976.

The previous prime is 403425137. The next prime is 403425149. The reversal of 403425144 is 441524304.

It is a happy number.

403425144 is a `hidden beast` number, since 403 + 4 + 251 + 4 + 4 = 666.

It is a super-2 number, since 2×403425144² = 325503693622841472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403425149) 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, 933639 + ... + 934070.

Almost surely, 2^403425144 is an apocalyptic number.

It is an amenable number.

403425144 is an abundant number, since it is smaller than the sum of its proper divisors (717200856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403425144 is a wasteful number, since it uses less digits than its factorization.

403425144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867724 (or 1867714 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 403425144 is about 20085.4460742101. The cubic root of 403425144 is about 738.9033817933.

Adding to 403425144 its reverse (441524304), we get a palindrome (844949448).

The spelling of 403425144 in words is "four hundred three million, four hundred twenty-five thousand, one hundred forty-four".