845715442 has 32 divisors (see below), whose sum is σ = 1492089984. Its totient is φ = 354432000.

The previous prime is 845715421. The next prime is 845715463. The reversal of 845715442 is 244517548.

It is an interprime number because it is at equal distance from previous prime (845715421) and next prime (845715463).

It is a junction number, because it is equal to n+sod(n) for n = 845715395 and 845715404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456963 + ... + 458809.

It is an arithmetic number, because the mean of its divisors is an integer number (46627812).

Almost surely, 2^845715442 is an apocalyptic number.

845715442 is a deficient number, since it is larger than the sum of its proper divisors (646374542).

845715442 is a wasteful number, since it uses less digits than its factorization.

845715442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474.

The product of its digits is 179200, while the sum is 40.

The square root of 845715442 is about 29081.1870803102. The cubic root of 845715442 is about 945.6739374823.

The spelling of 845715442 in words is "eight hundred forty-five million, seven hundred fifteen thousand, four hundred forty-two".