16421294 has 4 divisors (see below), whose sum is σ = 24631944. Its totient is φ = 8210646.

The previous prime is 16421267. The next prime is 16421297. The reversal of 16421294 is 49212461.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4105322 + ... + 4105325.

It is an arithmetic number, because the mean of its divisors is an integer number (6157986).

Almost surely, 2^16421294 is an apocalyptic number.

16421294 is a deficient number, since it is larger than the sum of its proper divisors (8210650).

16421294 is an equidigital number, since it uses as much as digits as its factorization.

16421294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210649.

The product of its digits is 3456, while the sum is 29.

The square root of 16421294 is about 4052.3195826588. The cubic root of 16421294 is about 254.1767323554.

The spelling of 16421294 in words is "sixteen million, four hundred twenty-one thousand, two hundred ninety-four".