1400642215 has 32 divisors (see below), whose sum is σ = 2013148800. Its totient is φ = 934440192.

The previous prime is 1400642153. The next prime is 1400642249. The reversal of 1400642215 is 5122460041.

It is a happy number.

It is not a de Polignac number, because 1400642215 - 2⁹ = 1400641703 is a prime.

It is a super-3 number, since 3×1400642215³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1400642215.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 52419 + ... + 74491.

It is an arithmetic number, because the mean of its divisors is an integer number (62910900).

Almost surely, 2^1400642215 is an apocalyptic number.

1400642215 is a deficient number, since it is larger than the sum of its proper divisors (612506585).

1400642215 is an equidigital number, since it uses as much as digits as its factorization.

1400642215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22136 (or 22122 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1400642215 is about 37425.1548426990. The cubic root of 1400642215 is about 1118.8599727937.

The spelling of 1400642215 in words is "one billion, four hundred million, six hundred forty-two thousand, two hundred fifteen".