1404142261 has 2 divisors, whose sum is σ = 1404142262. Its totient is φ = 1404142260.

The previous prime is 1404142219. The next prime is 1404142273. The reversal of 1404142261 is 1622414041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401079761 + 3062500 = 37431^2 + 1750^2 .

It is an emirp because it is prime and its reverse (1622414041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404142261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404142361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702071130 + 702071131.

It is an arithmetic number, because the mean of its divisors is an integer number (702071131).

Almost surely, 2^1404142261 is an apocalyptic number.

It is an amenable number.

1404142261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404142261 is an equidigital number, since it uses as much as digits as its factorization.

1404142261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1404142261 is about 37471.8862749128. The cubic root of 1404142261 is about 1119.7911656233.

The spelling of 1404142261 in words is "one billion, four hundred four million, one hundred forty-two thousand, two hundred sixty-one".