20501342 has 8 divisors (see below), whose sum is σ = 32370600. Its totient is φ = 9711144.

The previous prime is 20501339. The next prime is 20501363. The reversal of 20501342 is 24310502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20501342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269717 + ... + 269792.

It is an arithmetic number, because the mean of its divisors is an integer number (4046325).

Almost surely, 2^20501342 is an apocalyptic number.

20501342 is a deficient number, since it is larger than the sum of its proper divisors (11869258).

20501342 is a wasteful number, since it uses less digits than its factorization.

20501342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539530.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20501342 is about 4527.8407657514. The cubic root of 20501342 is about 273.6911557318.

Adding to 20501342 its reverse (24310502), we get a palindrome (44811844).

The spelling of 20501342 in words is "twenty million, five hundred one thousand, three hundred forty-two".