1621875342 has 32 divisors (see below), whose sum is σ = 3323400192. Its totient is φ = 527424224.

The previous prime is 1621875341. The next prime is 1621875347. The reversal of 1621875342 is 2435781261.

It is a self number, because there is not a number n which added to its sum of digits gives 1621875342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621875341) 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, 80323 + ... + 98465.

It is an arithmetic number, because the mean of its divisors is an integer number (103856256).

Almost surely, 2^1621875342 is an apocalyptic number.

1621875342 is an abundant number, since it is smaller than the sum of its proper divisors (1701524850).

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

1621875342 is a wasteful number, since it uses less digits than its factorization.

1621875342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512.

The product of its digits is 80640, while the sum is 39.

The square root of 1621875342 is about 40272.5134800400. The cubic root of 1621875342 is about 1174.9133099163.

The spelling of 1621875342 in words is "one billion, six hundred twenty-one million, eight hundred seventy-five thousand, three hundred forty-two".