420378357 has 8 divisors (see below), whose sum is σ = 640576576. Its totient is φ = 240216192.

The previous prime is 420378353. The next prime is 420378359. The reversal of 420378357 is 753873024.

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

It is not a de Polignac number, because 420378357 - 2² = 420378353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420378353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10008988 + ... + 10009029.

It is an arithmetic number, because the mean of its divisors is an integer number (80072072).

Almost surely, 2^420378357 is an apocalyptic number.

It is an amenable number.

420378357 is a deficient number, since it is larger than the sum of its proper divisors (220198219).

420378357 is a wasteful number, since it uses less digits than its factorization.

420378357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20018027.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 420378357 is about 20503.1304195237. The cubic root of 420378357 is about 749.1120495847.

The spelling of 420378357 in words is "four hundred twenty million, three hundred seventy-eight thousand, three hundred fifty-seven".