420726149 has 16 divisors (see below), whose sum is σ = 459191088. Its totient is φ = 383864832.

The previous prime is 420726127. The next prime is 420726161. The reversal of 420726149 is 941627024.

It can be written as a sum of positive squares in 8 ways, for example, as 28408900 + 392317249 = 5330^2 + 19807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420726149 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 (420726169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195809 + ... + 197945.

It is an arithmetic number, because the mean of its divisors is an integer number (28699443).

Almost surely, 2^420726149 is an apocalyptic number.

It is an amenable number.

420726149 is a deficient number, since it is larger than the sum of its proper divisors (38464939).

420726149 is a wasteful number, since it uses less digits than its factorization.

420726149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 420726149 is about 20511.6101025736. The cubic root of 420726149 is about 749.3185804848.

The spelling of 420726149 in words is "four hundred twenty million, seven hundred twenty-six thousand, one hundred forty-nine".