39142493 has 8 divisors (see below), whose sum is σ = 43051008. Its totient is φ = 35362224.

The previous prime is 39142487. The next prime is 39142501. The reversal of 39142493 is 39424193.

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 39142493 - 2²² = 34948189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39142403) 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, 31421 + ... + 32642.

It is an arithmetic number, because the mean of its divisors is an integer number (5381376).

Almost surely, 2^39142493 is an apocalyptic number.

It is an amenable number.

39142493 is a deficient number, since it is larger than the sum of its proper divisors (3908515).

39142493 is a wasteful number, since it uses less digits than its factorization.

39142493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64123.

The product of its digits is 23328, while the sum is 35.

The square root of 39142493 is about 6256.3961671237. The cubic root of 39142493 is about 339.5336541910.

The spelling of 39142493 in words is "thirty-nine million, one hundred forty-two thousand, four hundred ninety-three".