70042032 has 120 divisors (see below), whose sum is σ = 204272640. Its totient is φ = 22389120.

The previous prime is 70042013. The next prime is 70042039. The reversal of 70042032 is 23024007.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 70041996 and 70042014.

It is not an unprimeable number, because it can be changed into a prime (70042039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534607 + ... + 534737.

It is an arithmetic number, because the mean of its divisors is an integer number (1702272).

Almost surely, 2^70042032 is an apocalyptic number.

70042032 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70042032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102136320).

70042032 is an abundant number, since it is smaller than the sum of its proper divisors (134230608).

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

70042032 is a wasteful number, since it uses less digits than its factorization.

70042032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 70042032 is about 8369.1117808284. Note that the first 3 decimals coincide. The cubic root of 70042032 is about 412.2110019826.

Adding to 70042032 its reverse (23024007), we get a palindrome (93066039).

The spelling of 70042032 in words is "seventy million, forty-two thousand, thirty-two".