42139301 has 4 divisors (see below), whose sum is σ = 42237504. Its totient is φ = 42041100.

The previous prime is 42139259. The next prime is 42139309. The reversal of 42139301 is 10393124.

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 42139301 - 2¹⁴ = 42122917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42139309) 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, 48455 + ... + 49316.

It is an arithmetic number, because the mean of its divisors is an integer number (10559376).

Almost surely, 2^42139301 is an apocalyptic number.

It is an amenable number.

42139301 is a deficient number, since it is larger than the sum of its proper divisors (98203).

42139301 is an equidigital number, since it uses as much as digits as its factorization.

42139301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98202.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 42139301 is about 6491.4791072605. The cubic root of 42139301 is about 347.9865372208.

The spelling of 42139301 in words is "forty-two million, one hundred thirty-nine thousand, three hundred one".