772623142 has 4 divisors (see below), whose sum is σ = 1158934716. Its totient is φ = 386311570.

The previous prime is 772623109. The next prime is 772623143. The reversal of 772623142 is 241326277.

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

It is a junction number, because it is equal to n+sod(n) for n = 772623098 and 772623107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772623143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193155784 + ... + 193155787.

It is an arithmetic number, because the mean of its divisors is an integer number (289733679).

Almost surely, 2^772623142 is an apocalyptic number.

772623142 is a deficient number, since it is larger than the sum of its proper divisors (386311574).

772623142 is a wasteful number, since it uses less digits than its factorization.

772623142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386311573.

The product of its digits is 28224, while the sum is 34.

The square root of 772623142 is about 27796.0994026140. The cubic root of 772623142 is about 917.6052804075.

The spelling of 772623142 in words is "seven hundred seventy-two million, six hundred twenty-three thousand, one hundred forty-two".