420123434 has 8 divisors (see below), whose sum is σ = 630283620. Its totient is φ = 210028896.

The previous prime is 420123413. The next prime is 420123437. The reversal of 420123434 is 434321024.

It can be written as a sum of positive squares in 2 ways, for example, as 364695409 + 55428025 = 19097^2 + 7445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (420123437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5372 + ... + 29480.

Almost surely, 2^420123434 is an apocalyptic number.

420123434 is a deficient number, since it is larger than the sum of its proper divisors (210160186).

420123434 is a wasteful number, since it uses less digits than its factorization.

420123434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32824.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 420123434 is about 20496.9127919304. The cubic root of 420123434 is about 748.9605951451.

Adding to 420123434 its reverse (434321024), we get a palindrome (854444458).

The spelling of 420123434 in words is "four hundred twenty million, one hundred twenty-three thousand, four hundred thirty-four".