61004642 has 4 divisors (see below), whose sum is σ = 91506966. Its totient is φ = 30502320.

The previous prime is 61004633. The next prime is 61004663. The reversal of 61004642 is 24640016.

It is a happy number.

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., 46799281 + 14205361 = 6841^2 + 3769^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251159 + ... + 15251162.

Almost surely, 2^61004642 is an apocalyptic number.

61004642 is a deficient number, since it is larger than the sum of its proper divisors (30502324).

61004642 is a wasteful number, since it uses less digits than its factorization.

61004642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30502323.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 61004642 is about 7810.5468438516. The cubic root of 61004642 is about 393.6597034230.

Adding to 61004642 its reverse (24640016), we get a palindrome (85644658).

The spelling of 61004642 in words is "sixty-one million, four thousand, six hundred forty-two".