1401046261 has 2 divisors, whose sum is σ = 1401046262. Its totient is φ = 1401046260.

The previous prime is 1401046249. The next prime is 1401046291. The reversal of 1401046261 is 1626401041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 947100625 + 453945636 = 30775^2 + 21306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401046261 - 2⁷ = 1401046133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401046201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700523130 + 700523131.

It is an arithmetic number, because the mean of its divisors is an integer number (700523131).

Almost surely, 2^1401046261 is an apocalyptic number.

It is an amenable number.

1401046261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401046261 is an equidigital number, since it uses as much as digits as its factorization.

1401046261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1401046261 is about 37430.5525072767. The cubic root of 1401046261 is about 1118.9675490252.

It can be divided in two parts, 140 and 1046261, that added together give a palindrome (1046401).

The spelling of 1401046261 in words is "one billion, four hundred one million, forty-six thousand, two hundred sixty-one".