420135043 has 8 divisors (see below), whose sum is σ = 442660608. Its totient is φ = 397964424.

The previous prime is 420135031. The next prime is 420135073. The reversal of 420135043 is 340531024.

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 420135043 - 2²⁵ = 386580611 is a prime.

It is a super-2 number, since 2×420135043² = 353026908713223698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420135013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86305 + ... + 91042.

It is an arithmetic number, because the mean of its divisors is an integer number (55332576).

Almost surely, 2^420135043 is an apocalyptic number.

420135043 is a deficient number, since it is larger than the sum of its proper divisors (22525565).

420135043 is a wasteful number, since it uses less digits than its factorization.

420135043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177473.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 420135043 is about 20497.1959789626. The cubic root of 420135043 is about 748.9674935967.

Adding to 420135043 its reverse (340531024), we get a palindrome (760666067).

The spelling of 420135043 in words is "four hundred twenty million, one hundred thirty-five thousand, forty-three".