70042100 has 36 divisors (see below), whose sum is σ = 153115200. Its totient is φ = 27809760.

The previous prime is 70042087. The next prime is 70042109. The reversal of 70042100 is 124007.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70042109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11381 + ... + 16419.

It is an arithmetic number, because the mean of its divisors is an integer number (4253200).

Almost surely, 2^70042100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70042100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76557600).

70042100 is an abundant number, since it is smaller than the sum of its proper divisors (83073100).

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

70042100 is a wasteful number, since it uses less digits than its factorization.

70042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192 (or 5185 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 70042100 is about 8369.1158433851. The cubic root of 70042100 is about 412.2111353803.

Adding to 70042100 its reverse (124007), we get a palindrome (70166107).

The spelling of 70042100 in words is "seventy million, forty-two thousand, one hundred".