2102429 has 4 divisors (see below), whose sum is σ = 2402784. Its totient is φ = 1802076.

The previous prime is 2102417. The next prime is 2102431. The reversal of 2102429 is 9242012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102429 - 2⁸ = 2102173 is a prime.

It is a super-4 number, since 4×2102429⁴ (a number of 26 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102459) 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, 150167 + ... + 150180.

It is an arithmetic number, because the mean of its divisors is an integer number (600696).

2^2102429 is an apocalyptic number.

It is an amenable number.

2102429 is a deficient number, since it is larger than the sum of its proper divisors (300355).

2102429 is an equidigital number, since it uses as much as digits as its factorization.

2102429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300354.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2102429 is about 1449.9755170347. The cubic root of 2102429 is about 128.1072709159.

The spelling of 2102429 in words is "two million, one hundred two thousand, four hundred twenty-nine".