42801497 has 4 divisors (see below), whose sum is σ = 43074276. Its totient is φ = 42528720.

The previous prime is 42801487. The next prime is 42801511. The reversal of 42801497 is 79410824.

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 26512201 + 16289296 = 5149^2 + 4036^2 .

It is a cyclic number.

It is not a de Polignac number, because 42801497 - 2⁴ = 42801481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42801467) 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, 136154 + ... + 136467.

It is an arithmetic number, because the mean of its divisors is an integer number (10768569).

Almost surely, 2^42801497 is an apocalyptic number.

It is an amenable number.

42801497 is a deficient number, since it is larger than the sum of its proper divisors (272779).

42801497 is a wasteful number, since it uses less digits than its factorization.

42801497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272778.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 42801497 is about 6542.2853040814. The cubic root of 42801497 is about 349.7998774327.

The spelling of 42801497 in words is "forty-two million, eight hundred one thousand, four hundred ninety-seven".