1420235749 has 2 divisors, whose sum is σ = 1420235750. Its totient is φ = 1420235748.

The previous prime is 1420235701. The next prime is 1420235759. The reversal of 1420235749 is 9475320241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1338242724 + 81993025 = 36582^2 + 9055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420235749 - 2¹¹ = 1420233701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420235759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710117874 + 710117875.

It is an arithmetic number, because the mean of its divisors is an integer number (710117875).

Almost surely, 2^1420235749 is an apocalyptic number.

It is an amenable number.

1420235749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420235749 is an equidigital number, since it uses as much as digits as its factorization.

1420235749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1420235749 is about 37686.0152974548. The cubic root of 1420235749 is about 1124.0530629850.

It can be divided in two parts, 1420 and 235749, that added together give a square (237169 = 487²).

The spelling of 1420235749 in words is "one billion, four hundred twenty million, two hundred thirty-five thousand, seven hundred forty-nine".