3718121 has 16 divisors (see below), whose sum is σ = 4380480. Its totient is φ = 3118080.

The previous prime is 3718103. The next prime is 3718139. The reversal of 3718121 is 1218173.

3718121 = T₁₁₀ + T₁₁₁ + ... + T₂₈₆.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3718103) and next prime (3718139).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3718121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3718181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10865 + ... + 11201.

It is an arithmetic number, because the mean of its divisors is an integer number (273780).

Almost surely, 2^3718121 is an apocalyptic number.

It is an amenable number.

3718121 is a deficient number, since it is larger than the sum of its proper divisors (662359).

3718121 is a wasteful number, since it uses less digits than its factorization.

3718121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 336, while the sum is 23.

The square root of 3718121 is about 1928.2429826140. The cubic root of 3718121 is about 154.9201253393.

The spelling of 3718121 in words is "three million, seven hundred eighteen thousand, one hundred twenty-one".