42398379 has 12 divisors (see below), whose sum is σ = 61514856. Its totient is φ = 28139712.

The previous prime is 42398353. The next prime is 42398381. The reversal of 42398379 is 97389324.

It is a happy number.

It is not a de Polignac number, because 42398379 - 2¹² = 42394283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42398339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8334 + ... + 12419.

It is an arithmetic number, because the mean of its divisors is an integer number (5126238).

Almost surely, 2^42398379 is an apocalyptic number.

42398379 is a deficient number, since it is larger than the sum of its proper divisors (19116477).

42398379 is a wasteful number, since it uses less digits than its factorization.

42398379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20986 (or 20983 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 42398379 is about 6511.4037657021. The cubic root of 42398379 is about 348.6982364303.

The spelling of 42398379 in words is "forty-two million, three hundred ninety-eight thousand, three hundred seventy-nine".