61261042 has 4 divisors (see below), whose sum is σ = 91891566. Its totient is φ = 30630520.

The previous prime is 61261033. The next prime is 61261049. The reversal of 61261042 is 24016216.

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., 35748441 + 25512601 = 5979^2 + 5051^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61261049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15315259 + ... + 15315262.

Almost surely, 2^61261042 is an apocalyptic number.

61261042 is a deficient number, since it is larger than the sum of its proper divisors (30630524).

61261042 is a wasteful number, since it uses less digits than its factorization.

61261042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30630523.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 61261042 is about 7826.9433369611. The cubic root of 61261042 is about 394.2104444064.

Adding to 61261042 its reverse (24016216), we get a palindrome (85277258).

The spelling of 61261042 in words is "sixty-one million, two hundred sixty-one thousand, forty-two".