1241778197 has 16 divisors (see below), whose sum is σ = 1371427200. Its totient is φ = 1114982400.

The previous prime is 1241778179. The next prime is 1241778217. The reversal of 1241778197 is 7918771421.

It is a cyclic number.

It is not a de Polignac number, because 1241778197 - 2¹² = 1241774101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241777197) 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, 507497 + ... + 509937.

It is an arithmetic number, because the mean of its divisors is an integer number (85714200).

Almost surely, 2^1241778197 is an apocalyptic number.

It is an amenable number.

1241778197 is a deficient number, since it is larger than the sum of its proper divisors (129649003).

1241778197 is a wasteful number, since it uses less digits than its factorization.

1241778197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004.

The product of its digits is 197568, while the sum is 47.

The square root of 1241778197 is about 35238.8733786993. The cubic root of 1241778197 is about 1074.8503695108.

The spelling of 1241778197 in words is "one billion, two hundred forty-one million, seven hundred seventy-eight thousand, one hundred ninety-seven".