61277742 has 32 divisors (see below), whose sum is σ = 136800000. Its totient is φ = 20331864.

The previous prime is 61277737. The next prime is 61277743. The reversal of 61277742 is 24777216.

It is a happy number.

61277742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61277697 and 61277706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61277743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9759 + ... + 14757.

It is an arithmetic number, because the mean of its divisors is an integer number (4275000).

Almost surely, 2^61277742 is an apocalyptic number.

61277742 is an abundant number, since it is smaller than the sum of its proper divisors (75522258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61277742 is a wasteful number, since it uses less digits than its factorization.

61277742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237 (or 5231 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 61277742 is about 7828.0100919710. The cubic root of 61277742 is about 394.2462622557.

The spelling of 61277742 in words is "sixty-one million, two hundred seventy-seven thousand, seven hundred forty-two".