42097995 has 32 divisors (see below), whose sum is σ = 77428800. Its totient is φ = 21676032.

The previous prime is 42097987. The next prime is 42097997. The reversal of 42097995 is 59979024.

It is not a de Polignac number, because 42097995 - 2³ = 42097987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42097995.

It is not an unprimeable number, because it can be changed into a prime (42097997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1462 + ... + 9291.

It is an arithmetic number, because the mean of its divisors is an integer number (2419650).

Almost surely, 2^42097995 is an apocalyptic number.

42097995 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42097995 is a deficient number, since it is larger than the sum of its proper divisors (35330805).

42097995 is a wasteful number, since it uses less digits than its factorization.

42097995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796 (or 10790 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 42097995 is about 6488.2967718809. The cubic root of 42097995 is about 347.8727983382.

The spelling of 42097995 in words is "forty-two million, ninety-seven thousand, nine hundred ninety-five".