42069489 has 24 divisors (see below), whose sum is σ = 71185248. Its totient is φ = 21853440.

The previous prime is 42069473. The next prime is 42069491. The reversal of 42069489 is 98496024.

It is not a de Polignac number, because 42069489 - 2⁴ = 42069473 is a prime.

It is a super-2 number, since 2×42069489² = 3539683809442242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42069489.

It is not an unprimeable number, because it can be changed into a prime (42069289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11392 + ... + 14625.

It is an arithmetic number, because the mean of its divisors is an integer number (2966052).

Almost surely, 2^42069489 is an apocalyptic number.

42069489 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42069489 is a deficient number, since it is larger than the sum of its proper divisors (29115759).

42069489 is a wasteful number, since it uses less digits than its factorization.

42069489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26045 (or 26038 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 42069489 is about 6486.0996754598. The cubic root of 42069489 is about 347.7942617310.

It can be divided in two parts, 4206 and 9489, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 42069489 in words is "forty-two million, sixty-nine thousand, four hundred eighty-nine".