42381237 has 8 divisors (see below), whose sum is σ = 56570400. Its totient is φ = 28223120.

The previous prime is 42381233. The next prime is 42381253. The reversal of 42381237 is 73218324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42381237 - 2² = 42381233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42381233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4362 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (7071300).

Almost surely, 2^42381237 is an apocalyptic number.

It is an amenable number.

42381237 is a deficient number, since it is larger than the sum of its proper divisors (14189163).

42381237 is a wasteful number, since it uses less digits than its factorization.

42381237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15523.

The product of its digits is 8064, while the sum is 30.

The square root of 42381237 is about 6510.0873266032. The cubic root of 42381237 is about 348.6512362772.

The spelling of 42381237 in words is "forty-two million, three hundred eighty-one thousand, two hundred thirty-seven".