42986497 has 4 divisors (see below), whose sum is σ = 44468820. Its totient is φ = 41504176.

The previous prime is 42986483. The next prime is 42986513. The reversal of 42986497 is 79468924.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30869136 + 12117361 = 5556^2 + 3481^2 .

It is a cyclic number.

It is not a de Polignac number, because 42986497 - 2²³ = 34597889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42986497.

It is not an unprimeable number, because it can be changed into a prime (42986407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741118 + ... + 741175.

It is an arithmetic number, because the mean of its divisors is an integer number (11117205).

Almost surely, 2^42986497 is an apocalyptic number.

It is an amenable number.

42986497 is a deficient number, since it is larger than the sum of its proper divisors (1482323).

42986497 is a wasteful number, since it uses less digits than its factorization.

42986497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482322.

The product of its digits is 870912, while the sum is 49.

The square root of 42986497 is about 6556.4088493626. The cubic root of 42986497 is about 350.3031305839.

The spelling of 42986497 in words is "forty-two million, nine hundred eighty-six thousand, four hundred ninety-seven".