42143339 has 4 divisors (see below), whose sum is σ = 48163824. Its totient is φ = 36122856.

The previous prime is 42143327. The next prime is 42143347. The reversal of 42143339 is 93334124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42143339 - 2¹⁶ = 42077803 is a prime.

It is a super-2 number, since 2×42143339² = 3552122044137842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42143389) 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, 3010232 + ... + 3010245.

It is an arithmetic number, because the mean of its divisors is an integer number (12040956).

Almost surely, 2^42143339 is an apocalyptic number.

42143339 is a deficient number, since it is larger than the sum of its proper divisors (6020485).

42143339 is an equidigital number, since it uses as much as digits as its factorization.

42143339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020484.

The product of its digits is 7776, while the sum is 29.

The square root of 42143339 is about 6491.7901229168. The cubic root of 42143339 is about 347.9976521399.

The spelling of 42143339 in words is "forty-two million, one hundred forty-three thousand, three hundred thirty-nine".