34140021 has 8 divisors (see below), whose sum is σ = 46988544. Its totient is φ = 22025760.

The previous prime is 34140019. The next prime is 34140031. The reversal of 34140021 is 12004143.

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

It is not a de Polignac number, because 34140021 - 2¹ = 34140019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34140031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183456 + ... + 183641.

It is an arithmetic number, because the mean of its divisors is an integer number (5873568).

Almost surely, 2^34140021 is an apocalyptic number.

34140021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

34140021 is a deficient number, since it is larger than the sum of its proper divisors (12848523).

34140021 is a wasteful number, since it uses less digits than its factorization.

34140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367131.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 34140021 is about 5842.9462602355. The cubic root of 34140021 is about 324.4052903282.

Adding to 34140021 its reverse (12004143), we get a palindrome (46144164).

The spelling of 34140021 in words is "thirty-four million, one hundred forty thousand, twenty-one".