3172742 has 4 divisors (see below), whose sum is σ = 4759116. Its totient is φ = 1586370.

The previous prime is 3172733. The next prime is 3172747. The reversal of 3172742 is 2472713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2472713 = 137 ⋅18049.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 793184 + ... + 793187.

It is an arithmetic number, because the mean of its divisors is an integer number (1189779).

Almost surely, 2^3172742 is an apocalyptic number.

3172742 is a deficient number, since it is larger than the sum of its proper divisors (1586374).

3172742 is a wasteful number, since it uses less digits than its factorization.

3172742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586373.

The product of its digits is 2352, while the sum is 26.

The square root of 3172742 is about 1781.2192453485. The cubic root of 3172742 is about 146.9416523800.

The spelling of 3172742 in words is "three million, one hundred seventy-two thousand, seven hundred forty-two".