420613450 has 48 divisors (see below), whose sum is σ = 826420320. Its totient is φ = 158829120.

The previous prime is 420613433. The next prime is 420613493. The reversal of 420613450 is 54316024.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353757 + ... + 354943.

It is an arithmetic number, because the mean of its divisors is an integer number (17217090).

Almost surely, 2^420613450 is an apocalyptic number.

420613450 is a deficient number, since it is larger than the sum of its proper divisors (405806870).

420613450 is a wasteful number, since it uses less digits than its factorization.

420613450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 420613450 is about 20508.8627183469. The cubic root of 420613450 is about 749.2516683962.

Adding to 420613450 its reverse (54316024), we get a palindrome (474929474).

The spelling of 420613450 in words is "four hundred twenty million, six hundred thirteen thousand, four hundred fifty".