78627242 has 4 divisors (see below), whose sum is σ = 117940866. Its totient is φ = 39313620.

The previous prime is 78627239. The next prime is 78627293. The reversal of 78627242 is 24272687.

It is a happy number.

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., 76720081 + 1907161 = 8759^2 + 1381^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78627196 and 78627205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19656809 + ... + 19656812.

Almost surely, 2^78627242 is an apocalyptic number.

78627242 is a deficient number, since it is larger than the sum of its proper divisors (39313624).

78627242 is a wasteful number, since it uses less digits than its factorization.

78627242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39313623.

The product of its digits is 75264, while the sum is 38.

The square root of 78627242 is about 8867.2003473475. The cubic root of 78627242 is about 428.4081071127.

The spelling of 78627242 in words is "seventy-eight million, six hundred twenty-seven thousand, two hundred forty-two".