215266942 has 32 divisors (see below), whose sum is σ = 369100800. Its totient is φ = 93256800.

The previous prime is 215266897. The next prime is 215266943. The reversal of 215266942 is 249662512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215266943) 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 in 15 ways as a sum of consecutive naturals, for example, 48267 + ... + 52537.

It is an arithmetic number, because the mean of its divisors is an integer number (11534400).

Almost surely, 2^215266942 is an apocalyptic number.

215266942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215266942 is a deficient number, since it is larger than the sum of its proper divisors (153833858).

215266942 is a wasteful number, since it uses less digits than its factorization.

215266942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392.

The product of its digits is 51840, while the sum is 37.

The square root of 215266942 is about 14671.9781215758. The cubic root of 215266942 is about 599.3204732889.

The spelling of 215266942 in words is "two hundred fifteen million, two hundred sixty-six thousand, nine hundred forty-two".