1245605023 has 8 divisors (see below), whose sum is σ = 1354703616. Its totient is φ = 1138404000.

The previous prime is 1245604981. The next prime is 1245605027. The reversal of 1245605023 is 3205065421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245605023 - 2²¹ = 1243507871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1245604982 and 1245605000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245605027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473023 + ... + 475648.

It is an arithmetic number, because the mean of its divisors is an integer number (169337952).

Almost surely, 2^1245605023 is an apocalyptic number.

1245605023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1245605023 is a deficient number, since it is larger than the sum of its proper divisors (109098593).

1245605023 is a wasteful number, since it uses less digits than its factorization.

1245605023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948785.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1245605023 is about 35293.1299688764. The cubic root of 1245605023 is about 1075.9533703645.

The spelling of 1245605023 in words is "one billion, two hundred forty-five million, six hundred five thousand, twenty-three".