21429002 has 16 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 9168720.

The previous prime is 21428989. The next prime is 21429011. The reversal of 21429002 is 20092412.

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, 13427 + ... + 14937.

It is an arithmetic number, because the mean of its divisors is an integer number (2299752).

Almost surely, 2^21429002 is an apocalyptic number.

21429002 is a deficient number, since it is larger than the sum of its proper divisors (15367030).

21429002 is a wasteful number, since it uses less digits than its factorization.

21429002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533.

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

The square root of 21429002 is about 4629.1470056588. The cubic root of 21429002 is about 277.7584724835.

The spelling of 21429002 in words is "twenty-one million, four hundred twenty-nine thousand, two".