1402120051 has 2 divisors, whose sum is σ = 1402120052. Its totient is φ = 1402120050.

The previous prime is 1402120037. The next prime is 1402120081. The reversal of 1402120051 is 1500212041.

It is a weak prime.

It is an emirp because it is prime and its reverse (1500212041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1402120051 - 2⁵ = 1402120019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402120081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701060025 + 701060026.

It is an arithmetic number, because the mean of its divisors is an integer number (701060026).

Almost surely, 2^1402120051 is an apocalyptic number.

1402120051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402120051 is an equidigital number, since it uses as much as digits as its factorization.

1402120051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1402120051 is about 37444.8935236836. The cubic root of 1402120051 is about 1119.2533424279.

Adding to 1402120051 its reverse (1500212041), we get a palindrome (2902332092).

The spelling of 1402120051 in words is "one billion, four hundred two million, one hundred twenty thousand, fifty-one".