420035070 has 128 divisors (see below), whose sum is σ = 1264564224. Its totient is φ = 86920704.

The previous prime is 420035047. The next prime is 420035087. The reversal of 420035070 is 70530024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143239 + ... + 146141.

It is an arithmetic number, because the mean of its divisors is an integer number (9879408).

Almost surely, 2^420035070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420035070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632282112).

420035070 is an abundant number, since it is smaller than the sum of its proper divisors (844529154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420035070 is a wasteful number, since it uses less digits than its factorization.

420035070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 420035070 is about 20494.7571344478. The cubic root of 420035070 is about 748.9080821699.

Adding to 420035070 its reverse (70530024), we get a palindrome (490565094).

The spelling of 420035070 in words is "four hundred twenty million, thirty-five thousand, seventy".