251254342 has 4 divisors (see below), whose sum is σ = 376881516. Its totient is φ = 125627170.

The previous prime is 251254337. The next prime is 251254351. The reversal of 251254342 is 243452152.

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

It is a self number, because there is not a number n which added to its sum of digits gives 251254342.

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 as a sum of consecutive naturals, namely, 62813584 + ... + 62813587.

It is an arithmetic number, because the mean of its divisors is an integer number (94220379).

Almost surely, 2^251254342 is an apocalyptic number.

251254342 is a deficient number, since it is larger than the sum of its proper divisors (125627174).

251254342 is a wasteful number, since it uses less digits than its factorization.

251254342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125627173.

The product of its digits is 9600, while the sum is 28.

The square root of 251254342 is about 15851.0044476683. The cubic root of 251254342 is about 631.0123490341.

The spelling of 251254342 in words is "two hundred fifty-one million, two hundred fifty-four thousand, three hundred forty-two".