42499395 has 12 divisors (see below), whose sum is σ = 73665696. Its totient is φ = 22666320.

The previous prime is 42499381. The next prime is 42499397. The reversal of 42499395 is 59399424.

It is a happy number.

It is not a de Polignac number, because 42499395 - 2⁵ = 42499363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 944431 = 42499395 / (4 + 2 + 4 + 9 + 9 + 3 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 42499395.

It is not an unprimeable number, because it can be changed into a prime (42499397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472171 + ... + 472260.

It is an arithmetic number, because the mean of its divisors is an integer number (6138808).

Almost surely, 2^42499395 is an apocalyptic number.

42499395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42499395 is a deficient number, since it is larger than the sum of its proper divisors (31166301).

42499395 is a wasteful number, since it uses less digits than its factorization.

42499395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944442 (or 944439 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 42499395 is about 6519.1560036557. The cubic root of 42499395 is about 348.9749464094.

The spelling of 42499395 in words is "forty-two million, four hundred ninety-nine thousand, three hundred ninety-five".