61242534 has 32 divisors (see below), whose sum is σ = 144102240. Its totient is φ = 19213056.

The previous prime is 61242527. The next prime is 61242553. The reversal of 61242534 is 43524216.

61242534 is a `hidden beast` number, since 6 + 124 + 2 + 534 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 61242498 and 61242507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32439 + ... + 34274.

It is an arithmetic number, because the mean of its divisors is an integer number (4503195).

Almost surely, 2^61242534 is an apocalyptic number.

61242534 is an abundant number, since it is smaller than the sum of its proper divisors (82859706).

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

61242534 is a wasteful number, since it uses less digits than its factorization.

61242534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66741 (or 66735 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 61242534 is about 7825.7609214696. The cubic root of 61242534 is about 394.1707411870.

It can be divided in two parts, 61242 and 534, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61242534 in words is "sixty-one million, two hundred forty-two thousand, five hundred thirty-four".