3642140 has 12 divisors (see below), whose sum is σ = 7648536. Its totient is φ = 1456848.

The previous prime is 3642101. The next prime is 3642157. The reversal of 3642140 is 412463.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 182107 = 3642140 / (3 + 6 + 4 + 2 + 1 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91034 + ... + 91073.

It is an arithmetic number, because the mean of its divisors is an integer number (637378).

Almost surely, 2^3642140 is an apocalyptic number.

It is an amenable number.

3642140 is an abundant number, since it is smaller than the sum of its proper divisors (4006396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3642140 is a wasteful number, since it uses less digits than its factorization.

3642140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182116 (or 182114 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3642140 is about 1908.4391528157. The cubic root of 3642140 is about 153.8575733831.

The spelling of 3642140 in words is "three million, six hundred forty-two thousand, one hundred forty".