420121064 has 32 divisors (see below), whose sum is σ = 873914400. Its totient is φ = 187725120.

The previous prime is 420121063. The next prime is 420121087. The reversal of 420121064 is 460121024.

It is not an unprimeable number, because it can be changed into a prime (420121063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35267 + ... + 45650.

It is an arithmetic number, because the mean of its divisors is an integer number (27309825).

Almost surely, 2^420121064 is an apocalyptic number.

420121064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

420121064 is an abundant number, since it is smaller than the sum of its proper divisors (453793336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420121064 is a wasteful number, since it uses less digits than its factorization.

420121064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80993 (or 80989 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 420121064 is about 20496.8549782643. The cubic root of 420121064 is about 748.9591867972.

Adding to 420121064 its reverse (460121024), we get a palindrome (880242088).

The spelling of 420121064 in words is "four hundred twenty million, one hundred twenty-one thousand, sixty-four".