2142987 has 16 divisors (see below), whose sum is σ = 3562752. Its totient is φ = 1113120.

The previous prime is 2142971. The next prime is 2143019. The reversal of 2142987 is 7892412.

It is a happy number.

It is not a de Polignac number, because 2142987 - 2⁴ = 2142971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a d-powerful number, because it can be written as 2¹³ + 1 + 4⁶ + 2²¹ + 9³ + 8⁵ + 7² .

It is not an unprimeable number, because it can be changed into a prime (2142967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4408 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (222672).

2^2142987 is an apocalyptic number.

2142987 is a deficient number, since it is larger than the sum of its proper divisors (1419765).

2142987 is a wasteful number, since it uses less digits than its factorization.

2142987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9298.

The product of its digits is 8064, while the sum is 33.

The square root of 2142987 is about 1463.8944634092. The cubic root of 2142987 is about 128.9258031349.

The spelling of 2142987 in words is "two million, one hundred forty-two thousand, nine hundred eighty-seven".