420621874 has 8 divisors (see below), whose sum is σ = 635749488. Its totient is φ = 208705380.

The previous prime is 420621869. The next prime is 420621881. The reversal of 420621874 is 478126024.

It is a happy number.

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, 802452 + ... + 802975.

It is an arithmetic number, because the mean of its divisors is an integer number (79468686).

Almost surely, 2^420621874 is an apocalyptic number.

420621874 is a deficient number, since it is larger than the sum of its proper divisors (215127614).

420621874 is a wasteful number, since it uses less digits than its factorization.

420621874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605560.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 420621874 is about 20509.0680919441. The cubic root of 420621874 is about 749.2566703396.

Adding to 420621874 its reverse (478126024), we get a palindrome (898747898).

The spelling of 420621874 in words is "four hundred twenty million, six hundred twenty-one thousand, eight hundred seventy-four".