42070000 has 100 divisors (see below), whose sum is σ = 116600176. Its totient is φ = 14400000.

The previous prime is 42069997. The next prime is 42070027. The reversal of 42070000 is 7024.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69700 + ... + 70300.

Almost surely, 2^42070000 is an apocalyptic number.

42070000 is a gapful number since it is divisible by the number (40) 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 42070000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58300088).

42070000 is an abundant number, since it is smaller than the sum of its proper divisors (74530176).

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

42070000 is an equidigital number, since it uses as much as digits as its factorization.

42070000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 42070000 is about 6486.1390672726. The cubic root of 42070000 is about 347.7956698945.

Adding to 42070000 its reverse (7024), we get a palindrome (42077024).

The spelling of 42070000 in words is "forty-two million, seventy thousand".