61744042 has 4 divisors (see below), whose sum is σ = 92616066. Its totient is φ = 30872020.

The previous prime is 61744037. The next prime is 61744049. The reversal of 61744042 is 24044716.

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

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 4575321 = 7561^2 + 2139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61744042.

It is not an unprimeable number, because it can be changed into a prime (61744049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436009 + ... + 15436012.

Almost surely, 2^61744042 is an apocalyptic number.

61744042 is a deficient number, since it is larger than the sum of its proper divisors (30872024).

61744042 is a wasteful number, since it uses less digits than its factorization.

61744042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30872023.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 61744042 is about 7857.7377151442. The cubic root of 61744042 is about 395.2437570385.

Adding to 61744042 its reverse (24044716), we get a palindrome (85788758).

The spelling of 61744042 in words is "sixty-one million, seven hundred forty-four thousand, forty-two".