1142860 has 12 divisors (see below), whose sum is σ = 2400048. Its totient is φ = 457136.

The previous prime is 1142851. The next prime is 1142863. The reversal of 1142860 is 682411.

It is a super-2 number, since 2×1142860² = 2612257959200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142863) 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, 28552 + ... + 28591.

It is an arithmetic number, because the mean of its divisors is an integer number (200004).

2^1142860 is an apocalyptic number.

1142860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142860 is an abundant number, since it is smaller than the sum of its proper divisors (1257188).

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

1142860 is a wasteful number, since it uses less digits than its factorization.

1142860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57152 (or 57150 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1142860 is about 1069.0463039551. The cubic root of 1142860 is about 104.5516788412.

It can be divided in two parts, 1142 and 860, that added together give a palindrome (2002).

The spelling of 1142860 in words is "one million, one hundred forty-two thousand, eight hundred sixty".