1245405023 has 8 divisors (see below), whose sum is σ = 1323922320. Its totient is φ = 1167472000.

The previous prime is 1245405017. The next prime is 1245405061. The reversal of 1245405023 is 3205045421.

It is a happy number.

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 1245405023 - 2⁶ = 1245404959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1245404983 and 1245405001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245405223) 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, 141668 + ... + 150201.

It is an arithmetic number, because the mean of its divisors is an integer number (165490290).

Almost surely, 2^1245405023 is an apocalyptic number.

1245405023 is a deficient number, since it is larger than the sum of its proper divisors (78517297).

1245405023 is a wasteful number, since it uses less digits than its factorization.

1245405023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292137.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1245405023 is about 35290.2964425067. The cubic root of 1245405023 is about 1075.8957806287.

The spelling of 1245405023 in words is "one billion, two hundred forty-five million, four hundred five thousand, twenty-three".