420102461 has 2 divisors, whose sum is σ = 420102462. Its totient is φ = 420102460.

The previous prime is 420102457. The next prime is 420102469. The reversal of 420102461 is 164201024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324180025 + 95922436 = 18005^2 + 9794^2 .

It is a cyclic number.

It is not a de Polignac number, because 420102461 - 2² = 420102457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420102469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210051230 + 210051231.

It is an arithmetic number, because the mean of its divisors is an integer number (210051231).

Almost surely, 2^420102461 is an apocalyptic number.

It is an amenable number.

420102461 is a deficient number, since it is larger than the sum of its proper divisors (1).

420102461 is an equidigital number, since it uses as much as digits as its factorization.

420102461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 420102461 is about 20496.4011719131. The cubic root of 420102461 is about 748.9481319731.

Adding to 420102461 its reverse (164201024), we get a palindrome (584303485).

The spelling of 420102461 in words is "four hundred twenty million, one hundred two thousand, four hundred sixty-one".