61277142 has 32 divisors (see below), whose sum is σ = 127125504. Its totient is φ = 19670400.

The previous prime is 61277137. The next prime is 61277171. The reversal of 61277142 is 24177216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44143 + ... + 45509.

It is an arithmetic number, because the mean of its divisors is an integer number (3972672).

Almost surely, 2^61277142 is an apocalyptic number.

61277142 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61277142 is an abundant number, since it is smaller than the sum of its proper divisors (65848362).

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

61277142 is a wasteful number, since it uses less digits than its factorization.

61277142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its digits is 4704, while the sum is 30.

The square root of 61277142 is about 7827.9717679614. The cubic root of 61277142 is about 394.2449754995.

The spelling of 61277142 in words is "sixty-one million, two hundred seventy-seven thousand, one hundred forty-two".