151421004 has 36 divisors (see below), whose sum is σ = 437439184. Its totient is φ = 43263072.

The previous prime is 151420991. The next prime is 151421027. The reversal of 151421004 is 400124151.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300187 + ... + 300690.

Almost surely, 2^151421004 is an apocalyptic number.

151421004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

151421004 is an abundant number, since it is smaller than the sum of its proper divisors (286018180).

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

151421004 is a wasteful number, since it uses less digits than its factorization.

151421004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600894 (or 600889 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 151421004 is about 12305.3242135264. The cubic root of 151421004 is about 533.0018386193.

Adding to 151421004 its reverse (400124151), we get a palindrome (551545155).

The spelling of 151421004 in words is "one hundred fifty-one million, four hundred twenty-one thousand, four".