8435040420 has 24 divisors (see below), whose sum is σ = 23618113344. Its totient is φ = 2249344096.

The previous prime is 8435040403. The next prime is 8435040421. The reversal of 8435040420 is 240405348.

It is a super-2 number, since 2×8435040420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (8435040421) 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, 70291944 + ... + 70292063.

It is an arithmetic number, because the mean of its divisors is an integer number (984088056).

Almost surely, 2^8435040420 is an apocalyptic number.

It is an amenable number.

8435040420 is an abundant number, since it is smaller than the sum of its proper divisors (15183072924).

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

8435040420 is a wasteful number, since it uses less digits than its factorization.

8435040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140584019 (or 140584017 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 8435040420 is about 91842.4761208015. The cubic root of 8435040420 is about 2035.6153761168.

Adding to 8435040420 its reverse (240405348), we get a palindrome (8675445768).

The spelling of 8435040420 in words is "eight billion, four hundred thirty-five million, forty thousand, four hundred twenty".