1742390149 has 2 divisors, whose sum is σ = 1742390150. Its totient is φ = 1742390148.

The previous prime is 1742390147. The next prime is 1742390171. The reversal of 1742390149 is 9410932471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1675264900 + 67125249 = 40930^2 + 8193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742390149 - 2¹ = 1742390147 is a prime.

Together with 1742390147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1742390147) 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, 871195074 + 871195075.

It is an arithmetic number, because the mean of its divisors is an integer number (871195075).

Almost surely, 2^1742390149 is an apocalyptic number.

It is an amenable number.

1742390149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742390149 is an equidigital number, since it uses as much as digits as its factorization.

1742390149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1742390149 is about 41741.9471155815. The cubic root of 1742390149 is about 1203.3218489571.

The spelling of 1742390149 in words is "one billion, seven hundred forty-two million, three hundred ninety thousand, one hundred forty-nine".