402021527 has 2 divisors, whose sum is σ = 402021528. Its totient is φ = 402021526.

The previous prime is 402021497. The next prime is 402021541. The reversal of 402021527 is 725120204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402021527 - 2¹² = 402017431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402021827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201010763 + 201010764.

It is an arithmetic number, because the mean of its divisors is an integer number (201010764).

Almost surely, 2^402021527 is an apocalyptic number.

402021527 is a deficient number, since it is larger than the sum of its proper divisors (1).

402021527 is an equidigital number, since it uses as much as digits as its factorization.

402021527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 402021527 is about 20050.4744831637. The cubic root of 402021527 is about 738.0454427895.

The spelling of 402021527 in words is "four hundred two million, twenty-one thousand, five hundred twenty-seven".