42498121 has 4 divisors (see below), whose sum is σ = 42519312. Its totient is φ = 42476932.

The previous prime is 42498107. The next prime is 42498133. The reversal of 42498121 is 12189424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42498121 - 2¹³ = 42489929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42498101) 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, 7231 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (10629828).

Almost surely, 2^42498121 is an apocalyptic number.

It is an amenable number.

42498121 is a deficient number, since it is larger than the sum of its proper divisors (21191).

42498121 is a wasteful number, since it uses less digits than its factorization.

42498121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21190.

The product of its digits is 4608, while the sum is 31.

The square root of 42498121 is about 6519.0582908883. The cubic root of 42498121 is about 348.9714593125.

The spelling of 42498121 in words is "forty-two million, four hundred ninety-eight thousand, one hundred twenty-one".