29821142 has 8 divisors (see below), whose sum is σ = 48172656. Its totient is φ = 13763592.

The previous prime is 29821109. The next prime is 29821147. The reversal of 29821142 is 24112892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29821147) 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, 573458 + ... + 573509.

It is an arithmetic number, because the mean of its divisors is an integer number (6021582).

Almost surely, 2^29821142 is an apocalyptic number.

29821142 is a deficient number, since it is larger than the sum of its proper divisors (18351514).

29821142 is a wasteful number, since it uses less digits than its factorization.

29821142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146982.

The product of its digits is 2304, while the sum is 29.

The square root of 29821142 is about 5460.8737396135. The cubic root of 29821142 is about 310.1045155740.

The spelling of 29821142 in words is "twenty-nine million, eight hundred twenty-one thousand, one hundred forty-two".