402422515 has 16 divisors (see below), whose sum is σ = 527224320. Its totient is φ = 292439520.

The previous prime is 402422491. The next prime is 402422519. The reversal of 402422515 is 515224204.

It is not a de Polignac number, because 402422515 - 2⁵ = 402422483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402422515.

It is not an unprimeable number, because it can be changed into a prime (402422519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100726 + ... + 104644.

It is an arithmetic number, because the mean of its divisors is an integer number (32951520).

Almost surely, 2^402422515 is an apocalyptic number.

402422515 is a deficient number, since it is larger than the sum of its proper divisors (124801805).

402422515 is a wasteful number, since it uses less digits than its factorization.

402422515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 402422515 is about 20060.4714550780. The cubic root of 402422515 is about 738.2907439364.

Adding to 402422515 its reverse (515224204), we get a palindrome (917646719).

The spelling of 402422515 in words is "four hundred two million, four hundred twenty-two thousand, five hundred fifteen".