1145350021 has 8 divisors (see below), whose sum is σ = 1222943040. Its totient is φ = 1070073312.

The previous prime is 1145350013. The next prime is 1145350043. The reversal of 1145350021 is 1200535411.

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 1145350021 - 2³ = 1145350013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145349974 and 1145350001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145350051) 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, 578056 + ... + 580033.

It is an arithmetic number, because the mean of its divisors is an integer number (152867880).

Almost surely, 2^1145350021 is an apocalyptic number.

It is an amenable number.

1145350021 is a deficient number, since it is larger than the sum of its proper divisors (77593019).

1145350021 is a wasteful number, since it uses less digits than its factorization.

1145350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158155.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1145350021 is about 33843.0202700645. The cubic root of 1145350021 is about 1046.2755486986.

Adding to 1145350021 its reverse (1200535411), we get a palindrome (2345885432).

The spelling of 1145350021 in words is "one billion, one hundred forty-five million, three hundred fifty thousand, twenty-one".