2139129 has 12 divisors (see below), whose sum is σ = 3204656. Its totient is φ = 1425924.

The previous prime is 2139107. The next prime is 2139131. The reversal of 2139129 is 9219312.

2139129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2139129 - 2¹³ = 2130937 is a prime.

It is a super-3 number, since 3×2139129³ = 29365147125043331067, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4159 + ... + 4644.

2^2139129 is an apocalyptic number.

It is an amenable number.

2139129 is a deficient number, since it is larger than the sum of its proper divisors (1065527).

2139129 is an frugal number, since it uses more digits than its factorization.

2139129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818 (or 8806 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 2139129 is about 1462.5761518636. The cubic root of 2139129 is about 128.8483886767.

The spelling of 2139129 in words is "two million, one hundred thirty-nine thousand, one hundred twenty-nine".