1200023045 has 64 divisors (see below), whose sum is σ = 1698278400. Its totient is φ = 806615040.

The previous prime is 1200023039. The next prime is 1200023053. The reversal of 1200023045 is 5403200021.

1200023045 = T₄₆ + T₄₇ + ... + T₁₉₃₀.

It is not a de Polignac number, because 1200023045 - 2¹² = 1200018949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3858440 + ... + 3858750.

It is an arithmetic number, because the mean of its divisors is an integer number (26535600).

Almost surely, 2^1200023045 is an apocalyptic number.

It is an amenable number.

1200023045 is a deficient number, since it is larger than the sum of its proper divisors (498255355).

1200023045 is a wasteful number, since it uses less digits than its factorization.

1200023045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1200023045 is about 34641.3487757044. The cubic root of 1200023045 is about 1062.6653716298.

Adding to 1200023045 its reverse (5403200021), we get a palindrome (6603223066).

The spelling of 1200023045 in words is "one billion, two hundred million, twenty-three thousand, forty-five".