42100370 has 32 divisors (see below), whose sum is σ = 82963440. Its totient is φ = 15287040.

The previous prime is 42100369. The next prime is 42100379. The reversal of 42100370 is 7300124.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 896809 + 41203561 = 947^2 + 6419^2 .

It is not an unprimeable number, because it can be changed into a prime (42100379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5276 + ... + 10584.

Almost surely, 2^42100370 is an apocalyptic number.

42100370 is a deficient number, since it is larger than the sum of its proper divisors (40863070).

42100370 is a wasteful number, since it uses less digits than its factorization.

42100370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 42100370 is about 6488.4797911375. The cubic root of 42100370 is about 347.8793400778.

Adding to 42100370 its reverse (7300124), we get a palindrome (49400494).

The spelling of 42100370 in words is "forty-two million, one hundred thousand, three hundred seventy".