61030042 has 4 divisors (see below), whose sum is σ = 91545066. Its totient is φ = 30515020.

The previous prime is 61030027. The next prime is 61030049. The reversal of 61030042 is 24003016.

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., 60388441 + 641601 = 7771^2 + 801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61029998 and 61030025.

It is not an unprimeable number, because it can be changed into a prime (61030049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15257509 + ... + 15257512.

Almost surely, 2^61030042 is an apocalyptic number.

61030042 is a deficient number, since it is larger than the sum of its proper divisors (30515024).

61030042 is a wasteful number, since it uses less digits than its factorization.

61030042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30515023.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 61030042 is about 7812.1726811432. The cubic root of 61030042 is about 393.7143307909.

Adding to 61030042 its reverse (24003016), we get a palindrome (85033058).

The spelling of 61030042 in words is "sixty-one million, thirty thousand, forty-two".