61124542 has 4 divisors (see below), whose sum is σ = 91686816. Its totient is φ = 30562270.

The previous prime is 61124519. The next prime is 61124549. The reversal of 61124542 is 24542116.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61124549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15281134 + ... + 15281137.

It is an arithmetic number, because the mean of its divisors is an integer number (22921704).

Almost surely, 2^61124542 is an apocalyptic number.

61124542 is a deficient number, since it is larger than the sum of its proper divisors (30562274).

61124542 is a wasteful number, since it uses less digits than its factorization.

61124542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30562273.

The product of its digits is 1920, while the sum is 25.

The square root of 61124542 is about 7818.2185950509. The cubic root of 61124542 is about 393.9174374144.

Adding to 61124542 its reverse (24542116), we get a palindrome (85666658).

The spelling of 61124542 in words is "sixty-one million, one hundred twenty-four thousand, five hundred forty-two".