334040021 has 16 divisors (see below), whose sum is σ = 408155904. Its totient is φ = 266851584.

The previous prime is 334040011. The next prime is 334040029. The reversal of 334040021 is 120040433.

It is not a de Polignac number, because 334040021 - 2¹⁴ = 334023637 is a prime.

It is a super-2 number, since 2×334040021² = 223165471259360882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (334040029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370 + ... + 25883.

It is an arithmetic number, because the mean of its divisors is an integer number (25509744).

Almost surely, 2^334040021 is an apocalyptic number.

It is an amenable number.

334040021 is a deficient number, since it is larger than the sum of its proper divisors (74115883).

334040021 is a wasteful number, since it uses less digits than its factorization.

334040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27380.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 334040021 is about 18276.7617755444. The cubic root of 334040021 is about 693.8509183492.

Adding to 334040021 its reverse (120040433), we get a palindrome (454080454).

The spelling of 334040021 in words is "three hundred thirty-four million, forty thousand, twenty-one".