421152990 has 32 divisors (see below), whose sum is σ = 1016426880. Its totient is φ = 111678624.

The previous prime is 421152983. The next prime is 421152997. The reversal of 421152990 is 99251124.

It is an interprime number because it is at equal distance from previous prime (421152983) and next prime (421152997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421152997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33844 + ... + 44583.

It is an arithmetic number, because the mean of its divisors is an integer number (31763340).

Almost surely, 2^421152990 is an apocalyptic number.

421152990 is an abundant number, since it is smaller than the sum of its proper divisors (595273890).

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

421152990 is a wasteful number, since it uses less digits than its factorization.

421152990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78616.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 421152990 is about 20522.0123282294. The cubic root of 421152990 is about 749.5718979068.

The spelling of 421152990 in words is "four hundred twenty-one million, one hundred fifty-two thousand, nine hundred ninety".