42144030 has 32 divisors (see below), whose sum is σ = 112384800. Its totient is φ = 11238336.

The previous prime is 42144019. The next prime is 42144041. The reversal of 42144030 is 3044124.

It is an interprime number because it is at equal distance from previous prime (42144019) and next prime (42144041).

It is a super-2 number, since 2×42144030² = 3552238529281800, which contains 22 as substring.

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 = 42143994 and 42144012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77775 + ... + 78314.

It is an arithmetic number, because the mean of its divisors is an integer number (3512025).

Almost surely, 2^42144030 is an apocalyptic number.

42144030 is an abundant number, since it is smaller than the sum of its proper divisors (70240770).

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

42144030 is a wasteful number, since it uses less digits than its factorization.

42144030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156105 (or 156099 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42144030 is about 6491.8433437661. The cubic root of 42144030 is about 347.9995541017. Note that the first 3 decimals are identical.

Adding to 42144030 its reverse (3044124), we get a palindrome (45188154).

The spelling of 42144030 in words is "forty-two million, one hundred forty-four thousand, thirty".