13742447 has 4 divisors (see below), whose sum is σ = 13772976. Its totient is φ = 13711920.

The previous prime is 13742411. The next prime is 13742459. The reversal of 13742447 is 74424731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74424731 = 7211 ⋅10321.

It is a cyclic number.

It is not a de Polignac number, because 13742447 - 2⁶ = 13742383 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 (13742467) 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, 14579 + ... + 15492.

It is an arithmetic number, because the mean of its divisors is an integer number (3443244).

Almost surely, 2^13742447 is an apocalyptic number.

13742447 is a deficient number, since it is larger than the sum of its proper divisors (30529).

13742447 is an equidigital number, since it uses as much as digits as its factorization.

13742447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30528.

The product of its digits is 18816, while the sum is 32.

The square root of 13742447 is about 3707.0806573367. The cubic root of 13742447 is about 239.5271186439.

The spelling of 13742447 in words is "thirteen million, seven hundred forty-two thousand, four hundred forty-seven".