13877242 has 4 divisors (see below), whose sum is σ = 20815866. Its totient is φ = 6938620.

The previous prime is 13877233. The next prime is 13877249. The reversal of 13877242 is 24277831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24277831 = 409 ⋅59359.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 5239521 = 2939^2 + 2289^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13877198 and 13877207.

It is not an unprimeable number, because it can be changed into a prime (13877249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469309 + ... + 3469312.

Almost surely, 2^13877242 is an apocalyptic number.

13877242 is a deficient number, since it is larger than the sum of its proper divisors (6938624).

13877242 is an equidigital number, since it uses as much as digits as its factorization.

13877242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938623.

The product of its digits is 18816, while the sum is 34.

The square root of 13877242 is about 3725.2170406568. The cubic root of 13877242 is about 240.3077187123.

The spelling of 13877242 in words is "thirteen million, eight hundred seventy-seven thousand, two hundred forty-two".