39742454 has 4 divisors (see below), whose sum is σ = 59613684. Its totient is φ = 19871226.

The previous prime is 39742453. The next prime is 39742501. The reversal of 39742454 is 45424793.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39742453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9935612 + ... + 9935615.

It is an arithmetic number, because the mean of its divisors is an integer number (14903421).

Almost surely, 2^39742454 is an apocalyptic number.

39742454 is a deficient number, since it is larger than the sum of its proper divisors (19871230).

39742454 is a wasteful number, since it uses less digits than its factorization.

39742454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19871229.

The product of its digits is 120960, while the sum is 38.

The square root of 39742454 is about 6304.1616413287. The cubic root of 39742454 is about 341.2596125869.

The spelling of 39742454 in words is "thirty-nine million, seven hundred forty-two thousand, four hundred fifty-four".