123965142 has 32 divisors (see below), whose sum is σ = 287584512. Its totient is φ = 34889184.

The previous prime is 123965131. The next prime is 123965143. The reversal of 123965142 is 241569321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123965143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19213 + ... + 24840.

It is an arithmetic number, because the mean of its divisors is an integer number (8987016).

Almost surely, 2^123965142 is an apocalyptic number.

123965142 is an abundant number, since it is smaller than the sum of its proper divisors (163619370).

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

123965142 is a wasteful number, since it uses less digits than its factorization.

123965142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44132.

The product of its digits is 12960, while the sum is 33.

The square root of 123965142 is about 11133.9634452427. The cubic root of 123965142 is about 498.6163639679.

The spelling of 123965142 in words is "one hundred twenty-three million, nine hundred sixty-five thousand, one hundred forty-two".