42401097 has 16 divisors (see below), whose sum is σ = 64154880. Its totient is φ = 27665136.

The previous prime is 42401081. The next prime is 42401119. The reversal of 42401097 is 79010424.

It is a happy number.

It is not a de Polignac number, because 42401097 - 2⁴ = 42401081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 42401097.

It is not an unprimeable number, because it can be changed into a prime (42401897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15438 + ... + 17975.

It is an arithmetic number, because the mean of its divisors is an integer number (4009680).

Almost surely, 2^42401097 is an apocalyptic number.

42401097 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42401097 is a deficient number, since it is larger than the sum of its proper divisors (21753783).

42401097 is a wasteful number, since it uses less digits than its factorization.

42401097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33469 (or 33463 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42401097 is about 6511.6124731129. The cubic root of 42401097 is about 348.7056875136.

The spelling of 42401097 in words is "forty-two million, four hundred one thousand, ninety-seven".