42123465 has 24 divisors (see below), whose sum is σ = 76190400. Its totient is φ = 21488544.

The previous prime is 42123461. The next prime is 42123469. The reversal of 42123465 is 56432124.

42123465 is a `hidden beast` number, since 421 + 234 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (42123461) and next prime (42123469).

It is not a de Polignac number, because 42123465 - 2² = 42123461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42123461) 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, 19315 + ... + 21384.

It is an arithmetic number, because the mean of its divisors is an integer number (3174600).

Almost surely, 2^42123465 is an apocalyptic number.

42123465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42123465 is a deficient number, since it is larger than the sum of its proper divisors (34066935).

42123465 is a wasteful number, since it uses less digits than its factorization.

42123465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40733 (or 40730 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42123465 is about 6490.2592398147. The cubic root of 42123465 is about 347.9429405061.

Adding to 42123465 its reverse (56432124), we get a palindrome (98555589).

The spelling of 42123465 in words is "forty-two million, one hundred twenty-three thousand, four hundred sixty-five".