12002154 has 16 divisors (see below), whose sum is σ = 24309120. Its totient is φ = 3949920.

The previous prime is 12002147. The next prime is 12002161. The reversal of 12002154 is 45120021.

It is an interprime number because it is at equal distance from previous prime (12002147) and next prime (12002161).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12187 + ... + 13134.

It is an arithmetic number, because the mean of its divisors is an integer number (1519320).

Almost surely, 2^12002154 is an apocalyptic number.

12002154 is an abundant number, since it is smaller than the sum of its proper divisors (12306966).

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

12002154 is a wasteful number, since it uses less digits than its factorization.

12002154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25405.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12002154 is about 3464.4125043072. The cubic root of 12002154 is about 228.9565461049.

Adding to 12002154 its reverse (45120021), we get a palindrome (57122175).

The spelling of 12002154 in words is "twelve million, two thousand, one hundred fifty-four".