340021254 has 16 divisors (see below), whose sum is σ = 680247792. Its totient is φ = 113306208.

The previous prime is 340021243. The next prime is 340021271. The reversal of 340021254 is 452120043.

It is a super-2 number, since 2×340021254² = 231228906343465032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340021254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20652 + ... + 33264.

It is an arithmetic number, because the mean of its divisors is an integer number (42515487).

Almost surely, 2^340021254 is an apocalyptic number.

340021254 is an abundant number, since it is smaller than the sum of its proper divisors (340226538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340021254 is a wasteful number, since it uses less digits than its factorization.

340021254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17111.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 340021254 is about 18439.6652355730. The cubic root of 340021254 is about 697.9677478167.

Adding to 340021254 its reverse (452120043), we get a palindrome (792141297).

The spelling of 340021254 in words is "three hundred forty million, twenty-one thousand, two hundred fifty-four".