253866942 has 72 divisors (see below), whose sum is σ = 673569000. Its totient is φ = 68711328.

The previous prime is 253866919. The next prime is 253866973. The reversal of 253866942 is 249668352.

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 35 ways as a sum of consecutive naturals, for example, 9184 + ... + 24332.

It is an arithmetic number, because the mean of its divisors is an integer number (9355125).

Almost surely, 2^253866942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253866942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336784500).

253866942 is an abundant number, since it is smaller than the sum of its proper divisors (419702058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253866942 is a wasteful number, since it uses less digits than its factorization.

253866942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190 (or 15180 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 253866942 is about 15933.2025029496. The cubic root of 253866942 is about 633.1919485567.

The spelling of 253866942 in words is "two hundred fifty-three million, eight hundred sixty-six thousand, nine hundred forty-two".