21035146 has 8 divisors (see below), whose sum is σ = 34421184. Its totient is φ = 9561420.

The previous prime is 21035123. The next prime is 21035149. The reversal of 21035146 is 64153012.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 956143 = 21035146 / (2 + 1 + 0 + 3 + 5 + 1 + 4 + 6).

It is not an unprimeable number, because it can be changed into a prime (21035149) 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, 478050 + ... + 478093.

It is an arithmetic number, because the mean of its divisors is an integer number (4302648).

Almost surely, 2^21035146 is an apocalyptic number.

21035146 is a deficient number, since it is larger than the sum of its proper divisors (13386038).

21035146 is a wasteful number, since it uses less digits than its factorization.

21035146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956156.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 21035146 is about 4586.4088348075. The cubic root of 21035146 is about 276.0462447891.

Adding to 21035146 its reverse (64153012), we get a palindrome (85188158).

The spelling of 21035146 in words is "twenty-one million, thirty-five thousand, one hundred forty-six".