1234545 has 24 divisors (see below), whose sum is σ = 2143296. Its totient is φ = 606528.

The previous prime is 1234543. The next prime is 1234547. The reversal of 1234545 is 5454321.

1234545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (1234543) and next prime (1234547).

It is not a de Polignac number, because 1234545 - 2¹ = 1234543 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1234543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2292 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (89304).

2^1234545 is an apocalyptic number.

1234545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1234545 is a deficient number, since it is larger than the sum of its proper divisors (908751).

1234545 is a wasteful number, since it uses less digits than its factorization.

1234545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 508 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 1234545 is about 1111.1008055078. The cubic root of 1234545 is about 107.2759349584.

Adding to 1234545 its reverse (5454321), we get a palindrome (6688866).

The spelling of 1234545 in words is "one million, two hundred thirty-four thousand, five hundred forty-five".