2120421542 has 8 divisors (see below), whose sum is σ = 3182180256. Its totient is φ = 1059694792.

The previous prime is 2120421521. The next prime is 2120421553. The reversal of 2120421542 is 2451240212.

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

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, 252833 + ... + 261084.

It is an arithmetic number, because the mean of its divisors is an integer number (397772532).

Almost surely, 2^2120421542 is an apocalyptic number.

2120421542 is a deficient number, since it is larger than the sum of its proper divisors (1061758714).

2120421542 is a wasteful number, since it uses less digits than its factorization.

2120421542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515982.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2120421542 is about 46048.0351589511. The cubic root of 2120421542 is about 1284.7167976983.

Adding to 2120421542 its reverse (2451240212), we get a palindrome (4571661754).

The spelling of 2120421542 in words is "two billion, one hundred twenty million, four hundred twenty-one thousand, five hundred forty-two".