1149142201 has 9 divisors (see below), whose sum is σ = 1163522703. Its totient is φ = 1134938520.

The previous prime is 1149142199. The next prime is 1149142243. The reversal of 1149142201 is 1022419411.

The square root of 1149142201 is 33899.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 800946601 + 348195600 = 28301^2 + 18660^2 .

It is not a de Polignac number, because 1149142201 - 2¹ = 1149142199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149142601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3694836 + ... + 3695146.

Almost surely, 2^1149142201 is an apocalyptic number.

1149142201 is the 33899-th square number.

1149142201 is the 16950-th centered octagonal number.

It is an amenable number.

1149142201 is a deficient number, since it is larger than the sum of its proper divisors (14380502).

1149142201 is an frugal number, since it uses more digits than its factorization.

1149142201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The cubic root of 1149142201 is about 1047.4289935786.

Multiplying 1149142201 by its sum of digits (25), we get a square (28728555025 = 169495²).

Multiplying 1149142201 by its product of nonzero digits (576), we get a square (661905907776 = 813576²).

The spelling of 1149142201 in words is "one billion, one hundred forty-nine million, one hundred forty-two thousand, two hundred one".