1240151461 has 2 divisors, whose sum is σ = 1240151462. Its totient is φ = 1240151460.

The previous prime is 1240151443. The next prime is 1240151491. The reversal of 1240151461 is 1641510421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827655361 + 412496100 = 28769^2 + 20310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240151461 - 2⁷ = 1240151333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240151491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620075730 + 620075731.

It is an arithmetic number, because the mean of its divisors is an integer number (620075731).

Almost surely, 2^1240151461 is an apocalyptic number.

It is an amenable number.

1240151461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240151461 is an equidigital number, since it uses as much as digits as its factorization.

1240151461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1240151461 is about 35215.7842593346. The cubic root of 1240151461 is about 1074.3808111885.

Adding to 1240151461 its reverse (1641510421), we get a palindrome (2881661882).

The spelling of 1240151461 in words is "one billion, two hundred forty million, one hundred fifty-one thousand, four hundred sixty-one".