2130621542 has 32 divisors (see below), whose sum is σ = 3812761920. Its totient is φ = 873866880.

The previous prime is 2130621541. The next prime is 2130621551. The reversal of 2130621542 is 2451260312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130621541) 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, 2117 + ... + 65312.

It is an arithmetic number, because the mean of its divisors is an integer number (119148810).

Almost surely, 2^2130621542 is an apocalyptic number.

2130621542 is a deficient number, since it is larger than the sum of its proper divisors (1682140378).

2130621542 is a wasteful number, since it uses less digits than its factorization.

2130621542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67536.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2130621542 is about 46158.6561979441. The cubic root of 2130621542 is about 1286.7734886598.

Adding to 2130621542 its reverse (2451260312), we get a palindrome (4581881854).

The spelling of 2130621542 in words is "two billion, one hundred thirty million, six hundred twenty-one thousand, five hundred forty-two".