420129755 has 8 divisors (see below), whose sum is σ = 533812032. Its totient is φ = 316332928.

The previous prime is 420129733. The next prime is 420129761. The reversal of 420129755 is 557921024.

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

It is a cyclic number.

It is not a de Polignac number, because 420129755 - 2⁸ = 420129499 is a prime.

It is a super-2 number, since 2×420129755² = 353018022072720050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471267 + ... + 2471436.

It is an arithmetic number, because the mean of its divisors is an integer number (66726504).

Almost surely, 2^420129755 is an apocalyptic number.

420129755 is a deficient number, since it is larger than the sum of its proper divisors (113682277).

420129755 is a wasteful number, since it uses less digits than its factorization.

420129755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942725.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 420129755 is about 20497.0669853030. The cubic root of 420129755 is about 748.9643513080.

The spelling of 420129755 in words is "four hundred twenty million, one hundred twenty-nine thousand, seven hundred fifty-five".