420154136 has 8 divisors (see below), whose sum is σ = 787789020. Its totient is φ = 210077064.

The previous prime is 420154127. The next prime is 420154177. The reversal of 420154136 is 631451024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26259626 + ... + 26259641.

Almost surely, 2^420154136 is an apocalyptic number.

It is an amenable number.

420154136 is a deficient number, since it is larger than the sum of its proper divisors (367634884).

420154136 is a wasteful number, since it uses less digits than its factorization.

420154136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52519273 (or 52519269 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 420154136 is about 20497.6617203036. The cubic root of 420154136 is about 748.9788390121.

The spelling of 420154136 in words is "four hundred twenty million, one hundred fifty-four thousand, one hundred thirty-six".