61172842 has 8 divisors (see below), whose sum is σ = 91865376. Its totient is φ = 30551052.

The previous prime is 61172821. The next prime is 61172843. The reversal of 61172842 is 24827116.

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

It is not an unprimeable number, because it can be changed into a prime (61172843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15468 + ... + 19015.

It is an arithmetic number, because the mean of its divisors is an integer number (11483172).

Almost surely, 2^61172842 is an apocalyptic number.

61172842 is a deficient number, since it is larger than the sum of its proper divisors (30692534).

61172842 is a wasteful number, since it uses less digits than its factorization.

61172842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35372.

The product of its digits is 5376, while the sum is 31.

The square root of 61172842 is about 7821.3069240377. The cubic root of 61172842 is about 394.0211666332.

Adding to 61172842 its reverse (24827116), we get a palindrome (85999958).

The spelling of 61172842 in words is "sixty-one million, one hundred seventy-two thousand, eight hundred forty-two".