1942146457 has 4 divisors (see below), whose sum is σ = 1942309476. Its totient is φ = 1941983440.

The previous prime is 1942146449. The next prime is 1942146461. The reversal of 1942146457 is 7546412491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1460080521 + 482065936 = 38211^2 + 21956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942146457 - 2³ = 1942146449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942156457) 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 in 3 ways as a sum of consecutive naturals, for example, 62098 + ... + 87979.

It is an arithmetic number, because the mean of its divisors is an integer number (485577369).

Almost surely, 2^1942146457 is an apocalyptic number.

It is an amenable number.

1942146457 is a deficient number, since it is larger than the sum of its proper divisors (163019).

1942146457 is a wasteful number, since it uses less digits than its factorization.

1942146457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163018.

The product of its digits is 241920, while the sum is 43.

The square root of 1942146457 is about 44069.7907528502. The cubic root of 1942146457 is about 1247.6535087660.

The spelling of 1942146457 in words is "one billion, nine hundred forty-two million, one hundred forty-six thousand, four hundred fifty-seven".