420156346 has 8 divisors (see below), whose sum is σ = 640916640. Its totient is φ = 206517468.

The previous prime is 420156323. The next prime is 420156353. The reversal of 420156346 is 643651024.

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

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, 1780206 + ... + 1780441.

It is an arithmetic number, because the mean of its divisors is an integer number (80114580).

Almost surely, 2^420156346 is an apocalyptic number.

420156346 is a deficient number, since it is larger than the sum of its proper divisors (220760294).

420156346 is a wasteful number, since it uses less digits than its factorization.

420156346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560708.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 420156346 is about 20497.7156288207. The cubic root of 420156346 is about 748.9801522129.

The spelling of 420156346 in words is "four hundred twenty million, one hundred fifty-six thousand, three hundred forty-six".