61442929 has 4 divisors (see below), whose sum is σ = 61585920. Its totient is φ = 61299940.

The previous prime is 61442923. The next prime is 61442933. The reversal of 61442929 is 92924416.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61442929 - 2⁵ = 61442897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61442923) 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, 70849 + ... + 71710.

It is an arithmetic number, because the mean of its divisors is an integer number (15396480).

Almost surely, 2^61442929 is an apocalyptic number.

It is an amenable number.

61442929 is a deficient number, since it is larger than the sum of its proper divisors (142991).

61442929 is a wasteful number, since it uses less digits than its factorization.

61442929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142990.

The product of its digits is 31104, while the sum is 37.

The square root of 61442929 is about 7838.5540120612. The cubic root of 61442929 is about 394.6002022231.

The spelling of 61442929 in words is "sixty-one million, four hundred forty-two thousand, nine hundred twenty-nine".