420135626 has 8 divisors (see below), whose sum is σ = 631297380. Its totient is φ = 209703168.

The previous prime is 420135589. The next prime is 420135647. The reversal of 420135626 is 626531024.

It can be written as a sum of positive squares in 2 ways, for example, as 420045025 + 90601 = 20495^2 + 301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 180881 + ... + 183188.

Almost surely, 2^420135626 is an apocalyptic number.

420135626 is a deficient number, since it is larger than the sum of its proper divisors (211161754).

420135626 is a wasteful number, since it uses less digits than its factorization.

420135626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364648.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 420135626 is about 20497.2102004151. The cubic root of 420135626 is about 748.9678400312.

The spelling of 420135626 in words is "four hundred twenty million, one hundred thirty-five thousand, six hundred twenty-six".