403142780 has 24 divisors (see below), whose sum is σ = 847296240. Its totient is φ = 161124480.

The previous prime is 403142749. The next prime is 403142783. The reversal of 403142780 is 87241304.

It is a super-2 number, since 2×403142780² = 325048202132256800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403142783) 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, 18791 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (35304010).

Almost surely, 2^403142780 is an apocalyptic number.

It is an amenable number.

403142780 is an abundant number, since it is smaller than the sum of its proper divisors (444153460).

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

403142780 is a wasteful number, since it uses less digits than its factorization.

403142780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16589 (or 16587 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 403142780 is about 20078.4157741591. The cubic root of 403142780 is about 738.7309512831.

The spelling of 403142780 in words is "four hundred three million, one hundred forty-two thousand, seven hundred eighty".