42320156234546 has 4 divisors (see below), whose sum is σ = 63480234351822. Its totient is φ = 21160078117272.

The previous prime is 42320156234513. The next prime is 42320156234549. The reversal of 42320156234546 is 64543265102324.

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., 23027953575025 + 19292202659521 = 4798745^2 + 4392289^2 .

It is a super-2 number, since 2×42320156234546² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42320156234546.

It is not an unprimeable number, because it can be changed into a prime (42320156234549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580039058635 + ... + 10580039058638.

Almost surely, 2^{42320156234546} is an apocalyptic number.

42320156234546 is a deficient number, since it is larger than the sum of its proper divisors (21160078117276).

42320156234546 is a wasteful number, since it uses less digits than its factorization.

42320156234546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21160078117275.

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 42320156234546 in words is "forty-two trillion, three hundred twenty billion, one hundred fifty-six million, two hundred thirty-four thousand, five hundred forty-six".