61611142 has 8 divisors (see below), whose sum is σ = 94914576. Its totient is φ = 29972952.

The previous prime is 61611139. The next prime is 61611157. The reversal of 61611142 is 24111616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416218 + ... + 416365.

It is an arithmetic number, because the mean of its divisors is an integer number (11864322).

Almost surely, 2^61611142 is an apocalyptic number.

61611142 is a deficient number, since it is larger than the sum of its proper divisors (33303434).

61611142 is a wasteful number, since it uses less digits than its factorization.

61611142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832622.

The product of its digits is 288, while the sum is 22.

The square root of 61611142 is about 7849.2765271712. The cubic root of 61611142 is about 394.9599745803.

Adding to 61611142 its reverse (24111616), we get a palindrome (85722758).

The spelling of 61611142 in words is "sixty-one million, six hundred eleven thousand, one hundred forty-two".