42320756 has 6 divisors (see below), whose sum is σ = 74061330. Its totient is φ = 21160376.

The previous prime is 42320753. The next prime is 42320767. The reversal of 42320756 is 65702324.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 70756 = 6500^2 + 266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5290091 + ... + 5290098.

It is an arithmetic number, because the mean of its divisors is an integer number (12343555).

Almost surely, 2^42320756 is an apocalyptic number.

It is an amenable number.

42320756 is a deficient number, since it is larger than the sum of its proper divisors (31740574).

42320756 is a wasteful number, since it uses less digits than its factorization.

42320756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10580193 (or 10580191 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 42320756 is about 6505.4404923879. The cubic root of 42320756 is about 348.4853073926.

The spelling of 42320756 in words is "forty-two million, three hundred twenty thousand, seven hundred fifty-six".