39742130 has 8 divisors (see below), whose sum is σ = 71535852. Its totient is φ = 15896848.

The previous prime is 39742127. The next prime is 39742133. The reversal of 39742130 is 3124793.

It is an interprime number because it is at equal distance from previous prime (39742127) and next prime (39742133).

It can be written as a sum of positive squares in 2 ways, for example, as 39225169 + 516961 = 6263^2 + 719^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 39742093 and 39742102.

It is not an unprimeable number, because it can be changed into a prime (39742133) 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, 1987097 + ... + 1987116.

Almost surely, 2^39742130 is an apocalyptic number.

39742130 is a deficient number, since it is larger than the sum of its proper divisors (31793722).

39742130 is a wasteful number, since it uses less digits than its factorization.

39742130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974220.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 39742130 is about 6304.1359439657. The cubic root of 39742130 is about 341.2586852124.

The spelling of 39742130 in words is "thirty-nine million, seven hundred forty-two thousand, one hundred thirty".