1150135421 has 4 divisors (see below), whose sum is σ = 1150602972. Its totient is φ = 1149667872.

The previous prime is 1150135387. The next prime is 1150135453. The reversal of 1150135421 is 1245310511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1245310511 = 113 ⋅11020447.

It can be written as a sum of positive squares in 2 ways, for example, as 600936196 + 549199225 = 24514^2 + 23435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1150135421 is a prime.

It is a super-2 number, since 2×1150135421² = 2645622973277694482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150135471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230066 + ... + 235011.

It is an arithmetic number, because the mean of its divisors is an integer number (287650743).

Almost surely, 2^1150135421 is an apocalyptic number.

It is an amenable number.

1150135421 is a deficient number, since it is larger than the sum of its proper divisors (467551).

1150135421 is an equidigital number, since it uses as much as digits as its factorization.

1150135421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467550.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1150135421 is about 33913.6465305635. The cubic root of 1150135421 is about 1047.7306759537.

Adding to 1150135421 its reverse (1245310511), we get a palindrome (2395445932).

The spelling of 1150135421 in words is "one billion, one hundred fifty million, one hundred thirty-five thousand, four hundred twenty-one".