1642123341 has 32 divisors (see below), whose sum is σ = 2581632000. Its totient is φ = 1029379824.

The previous prime is 1642123337. The next prime is 1642123363. The reversal of 1642123341 is 1433212461.

It is a happy number.

1642123341 is a `hidden beast` number, since 1 + 6 + 421 + 233 + 4 + 1 = 666.

It is not a de Polignac number, because 1642123341 - 2² = 1642123337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642123321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14230 + ... + 59048.

It is an arithmetic number, because the mean of its divisors is an integer number (80676000).

Almost surely, 2^1642123341 is an apocalyptic number.

It is an amenable number.

1642123341 is a deficient number, since it is larger than the sum of its proper divisors (939508659).

1642123341 is a wasteful number, since it uses less digits than its factorization.

1642123341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44910 (or 44904 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1642123341 is about 40523.1210668675. The cubic root of 1642123341 is about 1179.7824316386.

The spelling of 1642123341 in words is "one billion, six hundred forty-two million, one hundred twenty-three thousand, three hundred forty-one".