61042158 has 48 divisors (see below), whose sum is σ = 137620080. Its totient is φ = 19531008.

The previous prime is 61042141. The next prime is 61042181. The reversal of 61042158 is 85124016.

61042158 is a `hidden beast` number, since 610 + 42 + 1 + 5 + 8 = 666.

It is a super-2 number, since 2×61042158² = 7452290106593928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175741 + ... + 176087.

It is an arithmetic number, because the mean of its divisors is an integer number (2867085).

Almost surely, 2^61042158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61042158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68810040).

61042158 is an abundant number, since it is smaller than the sum of its proper divisors (76577922).

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

61042158 is a wasteful number, since it uses less digits than its factorization.

61042158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 61042158 is about 7812.9480991493. The cubic root of 61042158 is about 393.7403831362.

The spelling of 61042158 in words is "sixty-one million, forty-two thousand, one hundred fifty-eight".