61516042 has 24 divisors (see below), whose sum is σ = 106782624. Its totient is φ = 26036352.

The previous prime is 61515967. The next prime is 61516051. The reversal of 61516042 is 24061516.

It is a junction number, because it is equal to n+sod(n) for n = 61515998 and 61516016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131493 + ... + 131959.

It is an arithmetic number, because the mean of its divisors is an integer number (4449276).

Almost surely, 2^61516042 is an apocalyptic number.

61516042 is a deficient number, since it is larger than the sum of its proper divisors (45266582).

61516042 is an equidigital number, since it uses as much as digits as its factorization.

61516042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61516042 is about 7843.2163045526. The cubic root of 61516042 is about 394.7566561837.

Adding to 61516042 its reverse (24061516), we get a palindrome (85577558).

The spelling of 61516042 in words is "sixty-one million, five hundred sixteen thousand, forty-two".