77245142 has 8 divisors (see below), whose sum is σ = 124780656. Its totient is φ = 35651592.

The previous prime is 77245141. The next prime is 77245151. The reversal of 77245142 is 24154277.

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

It is a junction number, because it is equal to n+sod(n) for n = 77245099 and 77245108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77245141) 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, 1485458 + ... + 1485509.

It is an arithmetic number, because the mean of its divisors is an integer number (15597582).

Almost surely, 2^77245142 is an apocalyptic number.

77245142 is a deficient number, since it is larger than the sum of its proper divisors (47535514).

77245142 is a wasteful number, since it uses less digits than its factorization.

77245142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970982.

The product of its digits is 15680, while the sum is 32.

The square root of 77245142 is about 8788.9215493142. The cubic root of 77245142 is about 425.8830856103.

The spelling of 77245142 in words is "seventy-seven million, two hundred forty-five thousand, one hundred forty-two".