1261142014 has 16 divisors (see below), whose sum is σ = 2091959280. Its totient is φ = 565392960.

The previous prime is 1261141993. The next prime is 1261142033. The reversal of 1261142014 is 4102411621.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391029 + ... + 394240.

It is an arithmetic number, because the mean of its divisors is an integer number (130747455).

Almost surely, 2^1261142014 is an apocalyptic number.

1261142014 is a deficient number, since it is larger than the sum of its proper divisors (830817266).

1261142014 is a wasteful number, since it uses less digits than its factorization.

1261142014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785355.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1261142014 is about 35512.5613551036. The cubic root of 1261142014 is about 1080.4085142970.

Adding to 1261142014 its reverse (4102411621), we get a palindrome (5363553635).

The spelling of 1261142014 in words is "one billion, two hundred sixty-one million, one hundred forty-two thousand, fourteen".