420750730 has 24 divisors (see below), whose sum is σ = 791721252. Its totient is φ = 160980864.

The previous prime is 420750727. The next prime is 420750739. The reversal of 420750730 is 37057024.

It can be written as a sum of positive squares in 2 ways, for example, as 397643481 + 23107249 = 19941^2 + 4807^2 .

It is not an unprimeable number, because it can be changed into a prime (420750739) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 34479 + ... + 45058.

Almost surely, 2^420750730 is an apocalyptic number.

420750730 is a deficient number, since it is larger than the sum of its proper divisors (370970522).

420750730 is a wasteful number, since it uses less digits than its factorization.

420750730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79590 (or 79567 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 420750730 is about 20512.2092910540. The cubic root of 420750730 is about 749.3331732244. Note that the first 3 decimals are identical.

The spelling of 420750730 in words is "four hundred twenty million, seven hundred fifty thousand, seven hundred thirty".