402000420 has 24 divisors (see below), whose sum is σ = 1125601344. Its totient is φ = 107200096.

The previous prime is 402000413. The next prime is 402000433. The reversal of 402000420 is 24000204.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 402000396 and 402000405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3349944 + ... + 3350063.

It is an arithmetic number, because the mean of its divisors is an integer number (46900056).

Almost surely, 2^402000420 is an apocalyptic number.

It is an amenable number.

402000420 is an abundant number, since it is smaller than the sum of its proper divisors (723600924).

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

402000420 is a wasteful number, since it uses less digits than its factorization.

402000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700019 (or 6700017 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 402000420 is about 20049.9481296087. The cubic root of 402000420 is about 738.0325262359.

Adding to 402000420 its reverse (24000204), we get a palindrome (426000624).

The spelling of 402000420 in words is "four hundred two million, four hundred twenty", and thus it is an aban number.