1401420749 has 2 divisors, whose sum is σ = 1401420750. Its totient is φ = 1401420748.

The previous prime is 1401420733. The next prime is 1401420793. The reversal of 1401420749 is 9470241041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859369225 + 542051524 = 29315^2 + 23282^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401420749 - 2⁴ = 1401420733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401420049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700710374 + 700710375.

It is an arithmetic number, because the mean of its divisors is an integer number (700710375).

Almost surely, 2^1401420749 is an apocalyptic number.

It is an amenable number.

1401420749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401420749 is an equidigital number, since it uses as much as digits as its factorization.

1401420749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1401420749 is about 37435.5546105571. The cubic root of 1401420749 is about 1119.0672370468.

The spelling of 1401420749 in words is "one billion, four hundred one million, four hundred twenty thousand, seven hundred forty-nine".