61612542 has 16 divisors (see below), whose sum is σ = 136916880. Its totient is φ = 20537496.

The previous prime is 61612519. The next prime is 61612547. The reversal of 61612542 is 24521616.

61612542 is a `hidden beast` number, since 6 + 1 + 612 + 5 + 42 = 666.

It is a super-2 number, since 2×61612542² = 7592210663403528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570433 + ... + 570540.

It is an arithmetic number, because the mean of its divisors is an integer number (8557305).

Almost surely, 2^61612542 is an apocalyptic number.

61612542 is an abundant number, since it is smaller than the sum of its proper divisors (75304338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61612542 is a wasteful number, since it uses less digits than its factorization.

61612542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140984 (or 1140978 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61612542 is about 7849.3657068581. The cubic root of 61612542 is about 394.9629661375.

The spelling of 61612542 in words is "sixty-one million, six hundred twelve thousand, five hundred forty-two".