420491241 has 12 divisors (see below), whose sum is σ = 618836868. Its totient is φ = 275037984.

The previous prime is 420491219. The next prime is 420491249. The reversal of 420491241 is 142194024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 327465216 + 93026025 = 18096^2 + 9645^2 .

It is not a de Polignac number, because 420491241 - 2⁶ = 420491177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420491249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440290 + ... + 441243.

It is an arithmetic number, because the mean of its divisors is an integer number (51569739).

Almost surely, 2^420491241 is an apocalyptic number.

It is an amenable number.

420491241 is a deficient number, since it is larger than the sum of its proper divisors (198345627).

420491241 is a wasteful number, since it uses less digits than its factorization.

420491241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881592 (or 881589 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 420491241 is about 20505.8830826668. The cubic root of 420491241 is about 749.1790964844.

The spelling of 420491241 in words is "four hundred twenty million, four hundred ninety-one thousand, two hundred forty-one".