1201549141 has 16 divisors (see below), whose sum is σ = 1396805760. Its totient is φ = 1024309440.

The previous prime is 1201549093. The next prime is 1201549163. The reversal of 1201549141 is 1419451021.

It is a cyclic number.

It is not a de Polignac number, because 1201549141 - 2¹⁵ = 1201516373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201549841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60615 + ... + 77956.

It is an arithmetic number, because the mean of its divisors is an integer number (87300360).

Almost surely, 2^1201549141 is an apocalyptic number.

It is an amenable number.

1201549141 is a deficient number, since it is larger than the sum of its proper divisors (195256619).

1201549141 is a wasteful number, since it uses less digits than its factorization.

1201549141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138636.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1201549141 is about 34663.3688639751. The cubic root of 1201549141 is about 1063.1156525368.

The spelling of 1201549141 in words is "one billion, two hundred one million, five hundred forty-nine thousand, one hundred forty-one".