42254039 has 4 divisors (see below), whose sum is σ = 42498456. Its totient is φ = 42009624.

The previous prime is 42253973. The next prime is 42254041. The reversal of 42254039 is 93045224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42254039 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 (42254239) 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, 121949 + ... + 122294.

It is an arithmetic number, because the mean of its divisors is an integer number (10624614).

Almost surely, 2^42254039 is an apocalyptic number.

42254039 is a deficient number, since it is larger than the sum of its proper divisors (244417).

42254039 is a wasteful number, since it uses less digits than its factorization.

42254039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244416.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 42254039 is about 6500.3106848827. The cubic root of 42254039 is about 348.3020866385.

The spelling of 42254039 in words is "forty-two million, two hundred fifty-four thousand, thirty-nine".