1642258542 has 64 divisors (see below), whose sum is σ = 3532197888. Its totient is φ = 508032000.

The previous prime is 1642258523. The next prime is 1642258543. The reversal of 1642258542 is 2458522461.

It is a self number, because there is not a number n which added to its sum of digits gives 1642258542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642258543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486942 + ... + 490302.

It is an arithmetic number, because the mean of its divisors is an integer number (55190592).

Almost surely, 2^1642258542 is an apocalyptic number.

1642258542 is an abundant number, since it is smaller than the sum of its proper divisors (1889939346).

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

1642258542 is a wasteful number, since it uses less digits than its factorization.

1642258542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505.

The product of its digits is 153600, while the sum is 39.

The square root of 1642258542 is about 40524.7892283230. The cubic root of 1642258542 is about 1179.8148091065.

The spelling of 1642258542 in words is "one billion, six hundred forty-two million, two hundred fifty-eight thousand, five hundred forty-two".