3742257 has 4 divisors (see below), whose sum is σ = 4989680. Its totient is φ = 2494836.

The previous prime is 3742243. The next prime is 3742267. The reversal of 3742257 is 7522473.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3742257 - 2⁴ = 3742241 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3742237) 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, 623707 + ... + 623712.

It is an arithmetic number, because the mean of its divisors is an integer number (1247420).

Almost surely, 2^3742257 is an apocalyptic number.

It is an amenable number.

3742257 is a deficient number, since it is larger than the sum of its proper divisors (1247423).

3742257 is a wasteful number, since it uses less digits than its factorization.

3742257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247422.

The product of its digits is 11760, while the sum is 30.

The square root of 3742257 is about 1934.4914060290. The cubic root of 3742257 is about 155.2546213887.

The spelling of 3742257 in words is "three million, seven hundred forty-two thousand, two hundred fifty-seven".