3142540 has 12 divisors (see below), whose sum is σ = 6599376. Its totient is φ = 1257008.

The previous prime is 3142519. The next prime is 3142547. The reversal of 3142540 is 452413.

It is not an unprimeable number, because it can be changed into a prime (3142547) 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, 78544 + ... + 78583.

It is an arithmetic number, because the mean of its divisors is an integer number (549948).

Almost surely, 2^3142540 is an apocalyptic number.

It is an amenable number.

3142540 is an abundant number, since it is smaller than the sum of its proper divisors (3456836).

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

3142540 is a wasteful number, since it uses less digits than its factorization.

3142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157136 (or 157134 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3142540 is about 1772.7210722502. The cubic root of 3142540 is about 146.4739088528.

Adding to 3142540 its reverse (452413), we get a palindrome (3594953).

The spelling of 3142540 in words is "three million, one hundred forty-two thousand, five hundred forty".