420150823 has 2 divisors, whose sum is σ = 420150824. Its totient is φ = 420150822.

The previous prime is 420150793. The next prime is 420150851. The reversal of 420150823 is 328051024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420150823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420150853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210075411 + 210075412.

It is an arithmetic number, because the mean of its divisors is an integer number (210075412).

Almost surely, 2^420150823 is an apocalyptic number.

420150823 is a deficient number, since it is larger than the sum of its proper divisors (1).

420150823 is an equidigital number, since it uses as much as digits as its factorization.

420150823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 420150823 is about 20497.5809060484. The cubic root of 420150823 is about 748.9768703906.

The spelling of 420150823 in words is "four hundred twenty million, one hundred fifty thousand, eight hundred twenty-three".