420234751 has 2 divisors, whose sum is σ = 420234752. Its totient is φ = 420234750.

The previous prime is 420234691. The next prime is 420234811. The reversal of 420234751 is 157432024.

It is a balanced prime because it is at equal distance from previous prime (420234691) and next prime (420234811).

It is a cyclic number.

It is not a de Polignac number, because 420234751 - 2⁷ = 420234623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420234151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210117375 + 210117376.

It is an arithmetic number, because the mean of its divisors is an integer number (210117376).

Almost surely, 2^420234751 is an apocalyptic number.

420234751 is a deficient number, since it is larger than the sum of its proper divisors (1).

420234751 is an equidigital number, since it uses as much as digits as its factorization.

420234751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 420234751 is about 20499.6280697968. The cubic root of 420234751 is about 749.0267381541.

Adding to 420234751 its reverse (157432024), we get a palindrome (577666775).

The spelling of 420234751 in words is "four hundred twenty million, two hundred thirty-four thousand, seven hundred fifty-one".