1142870 has 16 divisors (see below), whose sum is σ = 2147040. Its totient is φ = 437184.

The previous prime is 1142863. The next prime is 1142881. The reversal of 1142870 is 782411.

1142870 = 37² + 38² + ... + 151².

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (134190).

2^1142870 is an apocalyptic number.

1142870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142870 is a deficient number, since it is larger than the sum of its proper divisors (1004170).

1142870 is a wasteful number, since it uses less digits than its factorization.

1142870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1142870 is about 1069.0509810107. The cubic root of 1142870 is about 104.5519837819.

The spelling of 1142870 in words is "one million, one hundred forty-two thousand, eight hundred seventy".