3440142 has 12 divisors (see below), whose sum is σ = 7453680. Its totient is φ = 1146708.

The previous prime is 3440131. The next prime is 3440147. The reversal of 3440142 is 2410443.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 191119 = 3440142 / (3 + 4 + 4 + 0 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95542 + ... + 95577.

It is an arithmetic number, because the mean of its divisors is an integer number (621140).

Almost surely, 2^3440142 is an apocalyptic number.

3440142 is an abundant number, since it is smaller than the sum of its proper divisors (4013538).

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

3440142 is a wasteful number, since it uses less digits than its factorization.

3440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191127 (or 191124 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3440142 is about 1854.7619793386. The cubic root of 3440142 is about 150.9589233766.

Adding to 3440142 its reverse (2410443), we get a palindrome (5850585).

It can be divided in two parts, 34401 and 42, that added together give a palindrome (34443).

The spelling of 3440142 in words is "three million, four hundred forty thousand, one hundred forty-two".