61237142 has 4 divisors (see below), whose sum is σ = 91855716. Its totient is φ = 30618570.

The previous prime is 61237139. The next prime is 61237147. The reversal of 61237142 is 24173216.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61237147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15309284 + ... + 15309287.

It is an arithmetic number, because the mean of its divisors is an integer number (22963929).

Almost surely, 2^61237142 is an apocalyptic number.

61237142 is a deficient number, since it is larger than the sum of its proper divisors (30618574).

61237142 is a wasteful number, since it uses less digits than its factorization.

61237142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30618573.

The product of its digits is 2016, while the sum is 26.

The square root of 61237142 is about 7825.4164106455. The cubic root of 61237142 is about 394.1591728054.

The spelling of 61237142 in words is "sixty-one million, two hundred thirty-seven thousand, one hundred forty-two".