61225742 has 4 divisors (see below), whose sum is σ = 91838616. Its totient is φ = 30612870.

The previous prime is 61225741. The next prime is 61225753. The reversal of 61225742 is 24752216.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61225741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15306434 + ... + 15306437.

It is an arithmetic number, because the mean of its divisors is an integer number (22959654).

Almost surely, 2^61225742 is an apocalyptic number.

61225742 is a deficient number, since it is larger than the sum of its proper divisors (30612874).

61225742 is a wasteful number, since it uses less digits than its factorization.

61225742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30612873.

The product of its digits is 6720, while the sum is 29.

The square root of 61225742 is about 7824.6879809996. The cubic root of 61225742 is about 394.1347121960.

Adding to 61225742 its reverse (24752216), we get a palindrome (85977958).

The spelling of 61225742 in words is "sixty-one million, two hundred twenty-five thousand, seven hundred forty-two".