421352783 has 2 divisors, whose sum is σ = 421352784. Its totient is φ = 421352782.

The previous prime is 421352761. The next prime is 421352831. The reversal of 421352783 is 387253124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421352783 - 2²² = 417158479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421354783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210676391 + 210676392.

It is an arithmetic number, because the mean of its divisors is an integer number (210676392).

Almost surely, 2^421352783 is an apocalyptic number.

421352783 is a deficient number, since it is larger than the sum of its proper divisors (1).

421352783 is an equidigital number, since it uses as much as digits as its factorization.

421352783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 421352783 is about 20526.8795241751. The cubic root of 421352783 is about 749.6904102973.

The spelling of 421352783 in words is "four hundred twenty-one million, three hundred fifty-two thousand, seven hundred eighty-three".