61291142 has 8 divisors (see below), whose sum is σ = 100294632. Its totient is φ = 27859600.

The previous prime is 61291141. The next prime is 61291151. The reversal of 61291142 is 24119216.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61291141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392959 + ... + 1393002.

It is an arithmetic number, because the mean of its divisors is an integer number (12536829).

Almost surely, 2^61291142 is an apocalyptic number.

61291142 is a deficient number, since it is larger than the sum of its proper divisors (39003490).

61291142 is a wasteful number, since it uses less digits than its factorization.

61291142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785974.

The product of its digits is 864, while the sum is 26.

The square root of 61291142 is about 7828.8659459720. The cubic root of 61291142 is about 394.2749976208.

The spelling of 61291142 in words is "sixty-one million, two hundred ninety-one thousand, one hundred forty-two".