402245240 has 16 divisors (see below), whose sum is σ = 905051880. Its totient is φ = 160898080.

The previous prime is 402245231. The next prime is 402245281. The reversal of 402245240 is 42542204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5028026 + ... + 5028105.

Almost surely, 2^402245240 is an apocalyptic number.

402245240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402245240 is an abundant number, since it is smaller than the sum of its proper divisors (502806640).

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

402245240 is a wasteful number, since it uses less digits than its factorization.

402245240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056142 (or 10056138 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 402245240 is about 20056.0524530626. The cubic root of 402245240 is about 738.1823175024.

Adding to 402245240 its reverse (42542204), we get a palindrome (444787444).

The spelling of 402245240 in words is "four hundred two million, two hundred forty-five thousand, two hundred forty".