1201042045 has 16 divisors (see below), whose sum is σ = 1647957888. Its totient is φ = 823164480.

The previous prime is 1201042009. The next prime is 1201042081. The reversal of 1201042045 is 5402401021.

It is an interprime number because it is at equal distance from previous prime (1201042009) and next prime (1201042081).

It is not a de Polignac number, because 1201042045 - 2¹³ = 1201033853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74835 + ... + 89455.

It is an arithmetic number, because the mean of its divisors is an integer number (102997368).

Almost surely, 2^1201042045 is an apocalyptic number.

It is an amenable number.

1201042045 is a deficient number, since it is larger than the sum of its proper divisors (446915843).

1201042045 is a wasteful number, since it uses less digits than its factorization.

1201042045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1201042045 is about 34656.0535116161. The cubic root of 1201042045 is about 1062.9660740928.

Adding to 1201042045 its reverse (5402401021), we get a palindrome (6603443066).

The spelling of 1201042045 in words is "one billion, two hundred one million, forty-two thousand, forty-five".