1421673140 has 24 divisors (see below), whose sum is σ = 2996075040. Its totient is φ = 566657568.

The previous prime is 1421673133. The next prime is 1421673167. The reversal of 1421673140 is 413761241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119930 + ... + 131249.

It is an arithmetic number, because the mean of its divisors is an integer number (124836460).

Almost surely, 2^1421673140 is an apocalyptic number.

1421673140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421673140 is an abundant number, since it is smaller than the sum of its proper divisors (1574401900).

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

1421673140 is a wasteful number, since it uses less digits than its factorization.

1421673140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251471 (or 251469 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1421673140 is about 37705.0810899539. The cubic root of 1421673140 is about 1124.4321453522.

The spelling of 1421673140 in words is "one billion, four hundred twenty-one million, six hundred seventy-three thousand, one hundred forty".