420540449 has 8 divisors (see below), whose sum is σ = 481018560. Its totient is φ = 360162576.

The previous prime is 420540401. The next prime is 420540481. The reversal of 420540449 is 944045024.

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

It is a cyclic number.

It is not a de Polignac number, because 420540449 - 2⁸ = 420540193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420540149) 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, 15839 + ... + 33044.

It is an arithmetic number, because the mean of its divisors is an integer number (60127320).

Almost surely, 2^420540449 is an apocalyptic number.

It is an amenable number.

420540449 is a deficient number, since it is larger than the sum of its proper divisors (60478111).

420540449 is a wasteful number, since it uses less digits than its factorization.

420540449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50119.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 420540449 is about 20507.0828983549. The cubic root of 420540449 is about 749.2083195798.

The spelling of 420540449 in words is "four hundred twenty million, five hundred forty thousand, four hundred forty-nine".