19042065 has 48 divisors (see below), whose sum is σ = 38378496. Its totient is φ = 8553600.

The previous prime is 19042063. The next prime is 19042103. The reversal of 19042065 is 56024091.

19042065 = 333² + 334² + ... + 454².

19042065 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 19042065 - 2¹ = 19042063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19042061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18720 + ... + 19710.

It is an arithmetic number, because the mean of its divisors is an integer number (799552).

Almost surely, 2^19042065 is an apocalyptic number.

19042065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19042065 is an abundant number, since it is smaller than the sum of its proper divisors (19336431).

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

19042065 is a wasteful number, since it uses less digits than its factorization.

19042065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 19042065 is about 4363.7214622384. The cubic root of 19042065 is about 267.0369430850.

It can be divided in two parts, 1904 and 2065, that added together give a square (3969 = 63²).

The spelling of 19042065 in words is "nineteen million, forty-two thousand, sixty-five".