80906742 has 48 divisors (see below), whose sum is σ = 209153520. Its totient is φ = 23115456.

The previous prime is 80906741. The next prime is 80906743. The reversal of 80906742 is 24760908.

It is an interprime number because it is at equal distance from previous prime (80906741) and next prime (80906743).

It is a junction number, because it is equal to n+sod(n) for n = 80906697 and 80906706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80906741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12643 + ... + 17934.

It is an arithmetic number, because the mean of its divisors is an integer number (4357365).

Almost surely, 2^80906742 is an apocalyptic number.

80906742 is an abundant number, since it is smaller than the sum of its proper divisors (128246778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80906742 is a wasteful number, since it uses less digits than its factorization.

80906742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30602 (or 30589 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80906742 is about 8994.8175078764. The cubic root of 80906742 is about 432.5087563242.

The spelling of 80906742 in words is "eighty million, nine hundred six thousand, seven hundred forty-two".