61239042 has 12 divisors (see below), whose sum is σ = 132684630. Its totient is φ = 20413008.

The previous prime is 61239037. The next prime is 61239047. The reversal of 61239042 is 24093216.

61239042 is a `hidden beast` number, since 612 + 3 + 9 + 0 + 42 = 666.

61239042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61239037) and next prime (61239047).

It can be written as a sum of positive squares in only one way, i.e., 57471561 + 3767481 = 7581^2 + 1941^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61238997 and 61239015.

It is not an unprimeable number, because it can be changed into a prime (61239047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1701067 + ... + 1701102.

Almost surely, 2^61239042 is an apocalyptic number.

61239042 is an abundant number, since it is smaller than the sum of its proper divisors (71445588).

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

61239042 is a wasteful number, since it uses less digits than its factorization.

61239042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402177 (or 3402174 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61239042 is about 7825.5378089943. The cubic root of 61239042 is about 394.1632492784.

The spelling of 61239042 in words is "sixty-one million, two hundred thirty-nine thousand, forty-two".