403121052 has 18 divisors (see below), whose sum is σ = 1019000528. Its totient is φ = 134373672.

The previous prime is 403121041. The next prime is 403121053. The reversal of 403121052 is 250121304.

403121052 is a `hidden beast` number, since 403 + 1 + 210 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403121053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5598868 + ... + 5598939.

Almost surely, 2^403121052 is an apocalyptic number.

It is an amenable number.

403121052 is an abundant number, since it is smaller than the sum of its proper divisors (615879476).

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

403121052 is a wasteful number, since it uses less digits than its factorization.

403121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197817 (or 11197812 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 403121052 is about 20077.8746883230. The cubic root of 403121052 is about 738.7176793645.

Adding to 403121052 its reverse (250121304), we get a palindrome (653242356).

The spelling of 403121052 in words is "four hundred three million, one hundred twenty-one thousand, fifty-two".