42403365 has 32 divisors (see below), whose sum is σ = 77990400. Its totient is φ = 21833280.

The previous prime is 42403343. The next prime is 42403379. The reversal of 42403365 is 56330424.

It is not a de Polignac number, because 42403365 - 2¹⁵ = 42370597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1501 + ... + 9330.

It is an arithmetic number, because the mean of its divisors is an integer number (2437200).

Almost surely, 2^42403365 is an apocalyptic number.

42403365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42403365 is a deficient number, since it is larger than the sum of its proper divisors (35587035).

42403365 is a wasteful number, since it uses less digits than its factorization.

42403365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874 (or 10868 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 42403365 is about 6511.7866211970. The cubic root of 42403365 is about 348.7119047301.

Adding to 42403365 its reverse (56330424), we get a palindrome (98733789).

The spelling of 42403365 in words is "forty-two million, four hundred three thousand, three hundred sixty-five".