20214542 has 12 divisors (see below), whose sum is σ = 31354848. Its totient is φ = 9764100.

The previous prime is 20214541. The next prime is 20214553. The reversal of 20214542 is 24541202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35117 + ... + 35687.

It is an arithmetic number, because the mean of its divisors is an integer number (2612904).

Almost surely, 2^20214542 is an apocalyptic number.

20214542 is a deficient number, since it is larger than the sum of its proper divisors (11140306).

20214542 is an frugal number, since it uses more digits than its factorization.

20214542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20214542 is about 4496.0584960607. The cubic root of 20214542 is about 272.4089059486.

Adding to 20214542 its reverse (24541202), we get a palindrome (44755744).

The spelling of 20214542 in words is "twenty million, two hundred fourteen thousand, five hundred forty-two".