61142169 has 8 divisors (see below), whose sum is σ = 88934112. Its totient is φ = 37055840.

The previous prime is 61142161. The next prime is 61142189. The reversal of 61142169 is 96124116.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61142169 - 2³ = 61142161 is a prime.

It is a super-2 number, since 2×61142169² = 7476729660049122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61142161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926364 + ... + 926429.

It is an arithmetic number, because the mean of its divisors is an integer number (11116764).

Almost surely, 2^61142169 is an apocalyptic number.

It is an amenable number.

61142169 is a deficient number, since it is larger than the sum of its proper divisors (27791943).

61142169 is a wasteful number, since it uses less digits than its factorization.

61142169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852807.

The product of its digits is 2592, while the sum is 30.

The square root of 61142169 is about 7819.3458166269. The cubic root of 61142169 is about 393.9552995403.

The spelling of 61142169 in words is "sixty-one million, one hundred forty-two thousand, one hundred sixty-nine".