1421355504 has 40 divisors (see below), whose sum is σ = 3707496832. Its totient is φ = 469183680.

The previous prime is 1421355503. The next prime is 1421355539. The reversal of 1421355504 is 4055531241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421355503) 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, 138802 + ... + 148689.

Almost surely, 2^1421355504 is an apocalyptic number.

It is an amenable number.

1421355504 is an abundant number, since it is smaller than the sum of its proper divisors (2286141328).

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

1421355504 is a wasteful number, since it uses less digits than its factorization.

1421355504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287605 (or 287599 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1421355504 is about 37700.8687433062. The cubic root of 1421355504 is about 1124.3483973792.

Adding to 1421355504 its reverse (4055531241), we get a palindrome (5476886745).

The spelling of 1421355504 in words is "one billion, four hundred twenty-one million, three hundred fifty-five thousand, five hundred four".