61869542 has 32 divisors (see below), whose sum is σ = 109278720. Its totient is φ = 25724160.

The previous prime is 61869541. The next prime is 61869547. The reversal of 61869542 is 24596816.

It is a happy number.

61869542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61869542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61869541) 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 15 ways as a sum of consecutive naturals, for example, 66134 + ... + 67062.

It is an arithmetic number, because the mean of its divisors is an integer number (3414960).

Almost surely, 2^61869542 is an apocalyptic number.

61869542 is a deficient number, since it is larger than the sum of its proper divisors (47409178).

61869542 is a wasteful number, since it uses less digits than its factorization.

61869542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 103680, while the sum is 41.

The square root of 61869542 is about 7865.7194203709. The cubic root of 61869542 is about 395.5113646235.

The spelling of 61869542 in words is "sixty-one million, eight hundred sixty-nine thousand, five hundred forty-two".