1642446042 has 32 divisors (see below), whose sum is σ = 3343693824. Its totient is φ = 537768000.

The previous prime is 1642446011. The next prime is 1642446049. The reversal of 1642446042 is 2406442461.

It is a junction number, because it is equal to n+sod(n) for n = 1642445994 and 1642446012.

It is not an unprimeable number, because it can be changed into a prime (1642446049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66292 + ... + 87632.

It is an arithmetic number, because the mean of its divisors is an integer number (104490432).

Almost surely, 2^1642446042 is an apocalyptic number.

1642446042 is an abundant number, since it is smaller than the sum of its proper divisors (1701247782).

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

1642446042 is a wasteful number, since it uses less digits than its factorization.

1642446042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21574.

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 1642446042 is about 40527.1025611257. The cubic root of 1642446042 is about 1179.8597080171.

The spelling of 1642446042 in words is "one billion, six hundred forty-two million, four hundred forty-six thousand, forty-two".