1421890632 has 64 divisors (see below), whose sum is σ = 4041576000. Its totient is φ = 462938112.

The previous prime is 1421890607. The next prime is 1421890667. The reversal of 1421890632 is 2360981241.

1421890632 is a `hidden beast` number, since 1 + 4 + 2 + 18 + 9 + 0 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67257 + ... + 85832.

It is an arithmetic number, because the mean of its divisors is an integer number (63149625).

Almost surely, 2^1421890632 is an apocalyptic number.

1421890632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421890632 is an abundant number, since it is smaller than the sum of its proper divisors (2619685368).

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

1421890632 is a wasteful number, since it uses less digits than its factorization.

1421890632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153147 (or 153137 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1421890632 is about 37707.9651002278. The cubic root of 1421890632 is about 1124.4894821431.

The spelling of 1421890632 in words is "one billion, four hundred twenty-one million, eight hundred ninety thousand, six hundred thirty-two".