61983142 has 16 divisors (see below), whose sum is σ = 101539872. Its totient is φ = 28203840.

The previous prime is 61983133. The next prime is 61983143. The reversal of 61983142 is 24138916.

It is a junction number, because it is equal to n+sod(n) for n = 61983098 and 61983107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61983143) 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, 14943 + ... + 18634.

It is an arithmetic number, because the mean of its divisors is an integer number (6346242).

Almost surely, 2^61983142 is an apocalyptic number.

61983142 is a deficient number, since it is larger than the sum of its proper divisors (39556730).

61983142 is a wasteful number, since it uses less digits than its factorization.

61983142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33663.

The product of its digits is 10368, while the sum is 34.

The square root of 61983142 is about 7872.9373171644. The cubic root of 61983142 is about 395.7532855998.

The spelling of 61983142 in words is "sixty-one million, nine hundred eighty-three thousand, one hundred forty-two".