1421512911 has 72 divisors (see below), whose sum is σ = 2675137920. Its totient is φ = 710244288.

The previous prime is 1421512909. The next prime is 1421512957. The reversal of 1421512911 is 1192151241.

1421512911 is a `hidden beast` number, since 142 + 1 + 512 + 9 + 1 + 1 = 666.

1421512911 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1421512911 - 2¹ = 1421512909 is a prime.

It is a super-2 number, since 2×1421512911² = 4041397912279387842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421512711) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 198780 + ... + 205806.

Almost surely, 2^1421512911 is an apocalyptic number.

1421512911 is a deficient number, since it is larger than the sum of its proper divisors (1253625009).

1421512911 is a wasteful number, since it uses less digits than its factorization.

1421512911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7085 (or 7069 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1421512911 is about 37702.9562634019. The cubic root of 1421512911 is about 1124.3899009005.

The spelling of 1421512911 in words is "one billion, four hundred twenty-one million, five hundred twelve thousand, nine hundred eleven".