1206377121 has 8 divisors (see below), whose sum is σ = 1660390144. Its totient is φ = 778307760.

The previous prime is 1206377113. The next prime is 1206377131. The reversal of 1206377121 is 1217736021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1206377121 - 2³ = 1206377113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206377131) 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, 6485806 + ... + 6485991.

It is an arithmetic number, because the mean of its divisors is an integer number (207548768).

Almost surely, 2^1206377121 is an apocalyptic number.

It is an amenable number.

1206377121 is a deficient number, since it is larger than the sum of its proper divisors (454013023).

1206377121 is a wasteful number, since it uses less digits than its factorization.

1206377121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12971831.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 1206377121 is about 34732.9399993724. The cubic root of 1206377121 is about 1064.5376617356.

The spelling of 1206377121 in words is "one billion, two hundred six million, three hundred seventy-seven thousand, one hundred twenty-one".