65157842 has 4 divisors (see below), whose sum is σ = 97736766. Its totient is φ = 32578920.

The previous prime is 65157817. The next prime is 65157847. The reversal of 65157842 is 24875156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60357361 + 4800481 = 7769^2 + 2191^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65157796 and 65157805.

It is not an unprimeable number, because it can be changed into a prime (65157847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16289459 + ... + 16289462.

Almost surely, 2^65157842 is an apocalyptic number.

65157842 is a deficient number, since it is larger than the sum of its proper divisors (32578924).

65157842 is a wasteful number, since it uses less digits than its factorization.

65157842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32578923.

The product of its digits is 67200, while the sum is 38.

The square root of 65157842 is about 8072.0407580735. The cubic root of 65157842 is about 402.3977688746.

The spelling of 65157842 in words is "sixty-five million, one hundred fifty-seven thousand, eight hundred forty-two".