39742141 has 4 divisors (see below), whose sum is σ = 42079932. Its totient is φ = 37404352.

The previous prime is 39742133. The next prime is 39742201. The reversal of 39742141 is 14124793.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11758041 + 27984100 = 3429^2 + 5290^2 .

It is not a de Polignac number, because 39742141 - 2³ = 39742133 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 (39742541) 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, 1168870 + ... + 1168903.

It is an arithmetic number, because the mean of its divisors is an integer number (10519983).

Almost surely, 2^39742141 is an apocalyptic number.

It is an amenable number.

39742141 is a deficient number, since it is larger than the sum of its proper divisors (2337791).

39742141 is a wasteful number, since it uses less digits than its factorization.

39742141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337790.

The product of its digits is 6048, while the sum is 31.

The square root of 39742141 is about 6304.1368164087. The cubic root of 39742141 is about 341.2587166974.

The spelling of 39742141 in words is "thirty-nine million, seven hundred forty-two thousand, one hundred forty-one".