61043742 has 24 divisors (see below), whose sum is σ = 133032744. Its totient is φ = 20229264.

The previous prime is 61043699. The next prime is 61043779. The reversal of 61043742 is 24734016.

61043742 is a `hidden beast` number, since 610 + 4 + 3 + 7 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6688 + ... + 12915.

It is an arithmetic number, because the mean of its divisors is an integer number (5543031).

Almost surely, 2^61043742 is an apocalyptic number.

61043742 is an abundant number, since it is smaller than the sum of its proper divisors (71989002).

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

61043742 is a wasteful number, since it uses less digits than its factorization.

61043742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784 (or 19781 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 61043742 is about 7813.0494686774. The cubic root of 61043742 is about 393.7437888665.

Adding to 61043742 its reverse (24734016), we get a palindrome (85777758).

The spelling of 61043742 in words is "sixty-one million, forty-three thousand, seven hundred forty-two".