321254540 has 24 divisors (see below), whose sum is σ = 675183600. Its totient is φ = 128397248.

The previous prime is 321254539. The next prime is 321254567. The reversal of 321254540 is 45452123.

It is a happy number.

It is a super-2 number, since 2×321254540² = 206408958941223200, which contains 22 as substring.

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, 21611 + ... + 33309.

It is an arithmetic number, because the mean of its divisors is an integer number (28132650).

Almost surely, 2^321254540 is an apocalyptic number.

It is an amenable number.

321254540 is an abundant number, since it is smaller than the sum of its proper divisors (353929060).

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

321254540 is a wasteful number, since it uses less digits than its factorization.

321254540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13081 (or 13079 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 321254540 is about 17923.5749782235. The cubic root of 321254540 is about 684.8830602942.

It can be divided in two parts, 32 and 1254540, that multiplied together give a triangular number (40145280 = T₈₉₆₀).

The spelling of 321254540 in words is "three hundred twenty-one million, two hundred fifty-four thousand, five hundred forty".