420456365 has 32 divisors (see below), whose sum is σ = 592500480. Its totient is φ = 280433664.

The previous prime is 420456349. The next prime is 420456373. The reversal of 420456365 is 563654024.

It is a happy number.

It is not a de Polignac number, because 420456365 - 2⁴ = 420456349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506771 + ... + 507599.

It is an arithmetic number, because the mean of its divisors is an integer number (18515640).

Almost surely, 2^420456365 is an apocalyptic number.

It is an amenable number.

420456365 is a deficient number, since it is larger than the sum of its proper divisors (172044115).

420456365 is a wasteful number, since it uses less digits than its factorization.

420456365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 420456365 is about 20505.0326749313. The cubic root of 420456365 is about 749.1583833359.

It can be divided in two parts, 420456 and 365, that multiplied together give a triangular number (153466440 = T₁₇₅₁₉).

The spelling of 420456365 in words is "four hundred twenty million, four hundred fifty-six thousand, three hundred sixty-five".