61251442 has 32 divisors (see below), whose sum is σ = 113028480. Its totient is φ = 24295680.

The previous prime is 61251439. The next prime is 61251457. The reversal of 61251442 is 24415216.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12409 + ... + 16627.

It is an arithmetic number, because the mean of its divisors is an integer number (3532140).

Almost surely, 2^61251442 is an apocalyptic number.

61251442 is a deficient number, since it is larger than the sum of its proper divisors (51777038).

61251442 is a wasteful number, since it uses less digits than its factorization.

61251442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306.

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

The square root of 61251442 is about 7826.3300467077. The cubic root of 61251442 is about 394.1898515585.

Adding to 61251442 its reverse (24415216), we get a palindrome (85666658).

The spelling of 61251442 in words is "sixty-one million, two hundred fifty-one thousand, four hundred forty-two".