253724942 has 4 divisors (see below), whose sum is σ = 380587416. Its totient is φ = 126862470.

The previous prime is 253724929. The next prime is 253724953. The reversal of 253724942 is 249427352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 253724896 and 253724905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63431234 + ... + 63431237.

It is an arithmetic number, because the mean of its divisors is an integer number (95146854).

Almost surely, 2^253724942 is an apocalyptic number.

253724942 is a deficient number, since it is larger than the sum of its proper divisors (126862474).

253724942 is a wasteful number, since it uses less digits than its factorization.

253724942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126862473.

The product of its digits is 120960, while the sum is 38.

The square root of 253724942 is about 15928.7457761118. The cubic root of 253724942 is about 633.0738682932.

The spelling of 253724942 in words is "two hundred fifty-three million, seven hundred twenty-four thousand, nine hundred forty-two".