61777142 has 24 divisors (see below), whose sum is σ = 108308664. Its totient is φ = 26349792.

The previous prime is 61777127. The next prime is 61777147. The reversal of 61777142 is 24177716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61777147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20858 + ... + 23634.

It is an arithmetic number, because the mean of its divisors is an integer number (4512861).

Almost surely, 2^61777142 is an apocalyptic number.

61777142 is a deficient number, since it is larger than the sum of its proper divisors (46531522).

61777142 is a wasteful number, since it uses less digits than its factorization.

61777142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3013 counting only the distinct ones).

The product of its digits is 16464, while the sum is 35.

The square root of 61777142 is about 7859.8436371215. The cubic root of 61777142 is about 395.3143723877.

It can be divided in two parts, 6177714 and 2, that added together give a palindrome (6177716).

The spelling of 61777142 in words is "sixty-one million, seven hundred seventy-seven thousand, one hundred forty-two".