1402120451 has 2 divisors, whose sum is σ = 1402120452. Its totient is φ = 1402120450.

The previous prime is 1402120397. The next prime is 1402120463. The reversal of 1402120451 is 1540212041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402120451 - 2¹⁸ = 1401858307 is a prime.

It is a super-4 number, since 4×1402120451⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1402120051) 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 as a sum of consecutive naturals, namely, 701060225 + 701060226.

It is an arithmetic number, because the mean of its divisors is an integer number (701060226).

Almost surely, 2^1402120451 is an apocalyptic number.

1402120451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402120451 is an equidigital number, since it uses as much as digits as its factorization.

1402120451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1402120451 is about 37444.8988648654. The cubic root of 1402120451 is about 1119.2534488622.

Adding to 1402120451 its reverse (1540212041), we get a palindrome (2942332492).

The spelling of 1402120451 in words is "one billion, four hundred two million, one hundred twenty thousand, four hundred fifty-one".