1641242142 has 32 divisors (see below), whose sum is σ = 3805781760. Its totient is φ = 523294200.

The previous prime is 1641242131. The next prime is 1641242191. The reversal of 1641242142 is 2412421461.

1641242142 is a `hidden beast` number, since 1 + 641 + 2 + 4 + 2 + 14 + 2 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 659484 + ... + 661967.

It is an arithmetic number, because the mean of its divisors is an integer number (118930680).

Almost surely, 2^1641242142 is an apocalyptic number.

1641242142 is an abundant number, since it is smaller than the sum of its proper divisors (2164539618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641242142 is a wasteful number, since it uses less digits than its factorization.

1641242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321485 (or 1321479 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1641242142 is about 40512.2468150064. The cubic root of 1641242142 is about 1179.5713615990.

The spelling of 1641242142 in words is "one billion, six hundred forty-one million, two hundred forty-two thousand, one hundred forty-two".