42091630 has 16 divisors (see below), whose sum is σ = 86588640. Its totient is φ = 14431392.

The previous prime is 42091627. The next prime is 42091639. The reversal of 42091630 is 3619024.

It is a junction number, because it is equal to n+sod(n) for n = 42091595 and 42091604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42091639) 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, 300585 + ... + 300724.

It is an arithmetic number, because the mean of its divisors is an integer number (5411790).

Almost surely, 2^42091630 is an apocalyptic number.

42091630 is an abundant number, since it is smaller than the sum of its proper divisors (44497010).

42091630 is a wasteful number, since it uses less digits than its factorization.

42091630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601323.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 42091630 is about 6487.8062548137. The cubic root of 42091630 is about 347.8552652628.

The spelling of 42091630 in words is "forty-two million, ninety-one thousand, six hundred thirty".