61308142 has 16 divisors (see below), whose sum is σ = 108490752. Its totient is φ = 25427160.

The previous prime is 61308127. The next prime is 61308197. The reversal of 61308142 is 24180316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70198 + ... + 71065.

It is an arithmetic number, because the mean of its divisors is an integer number (6780672).

Almost surely, 2^61308142 is an apocalyptic number.

61308142 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61308142 is a deficient number, since it is larger than the sum of its proper divisors (47182610).

61308142 is a wasteful number, since it uses less digits than its factorization.

61308142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141303.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 61308142 is about 7829.9515962744. The cubic root of 61308142 is about 394.3114469083.

Adding to 61308142 its reverse (24180316), we get a palindrome (85488458).

The spelling of 61308142 in words is "sixty-one million, three hundred eight thousand, one hundred forty-two".