420745245 has 8 divisors (see below), whose sum is σ = 673192416. Its totient is φ = 224397456.

The previous prime is 420745201. The next prime is 420745249. The reversal of 420745245 is 542547024.

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

It is not a de Polignac number, because 420745245 - 2⁹ = 420744733 is a prime.

It is a super-2 number, since 2×420745245² = 354053122380220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420745249) 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, 14024827 + ... + 14024856.

It is an arithmetic number, because the mean of its divisors is an integer number (84149052).

Almost surely, 2^420745245 is an apocalyptic number.

It is an amenable number.

420745245 is a deficient number, since it is larger than the sum of its proper divisors (252447171).

420745245 is a wasteful number, since it uses less digits than its factorization.

420745245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28049691.

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 420745245 is about 20512.0755897593. The cubic root of 420745245 is about 749.3299170523.

The spelling of 420745245 in words is "four hundred twenty million, seven hundred forty-five thousand, two hundred forty-five".