1402012521 has 24 divisors (see below), whose sum is σ = 2492468160. Its totient is φ = 739522656.

The previous prime is 1402012459. The next prime is 1402012531. The reversal of 1402012521 is 1252102041.

1402012521 is a `hidden beast` number, since 140 + 2 + 0 + 1 + 2 + 521 = 666.

It is not a de Polignac number, because 1402012521 - 2⁹ = 1402012009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1402012494 and 1402012503.

It is not an unprimeable number, because it can be changed into a prime (1402012531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855111 + ... + 856748.

It is an arithmetic number, because the mean of its divisors is an integer number (103852840).

Almost surely, 2^1402012521 is an apocalyptic number.

It is an amenable number.

1402012521 is a deficient number, since it is larger than the sum of its proper divisors (1090455639).

1402012521 is a wasteful number, since it uses less digits than its factorization.

1402012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711885 (or 1711882 counting only the distinct ones).

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

The square root of 1402012521 is about 37443.4576528397. The cubic root of 1402012521 is about 1119.2247294741.

Adding to 1402012521 its reverse (1252102041), we get a palindrome (2654114562).

The spelling of 1402012521 in words is "one billion, four hundred two million, twelve thousand, five hundred twenty-one".