102001140554 has 32 divisors (see below), whose sum is σ = 161994898944. Its totient is φ = 48069141120.

The previous prime is 102001140541. The next prime is 102001140557. The reversal of 102001140554 is 455041100201.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (102001140557) 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, 3656399 + ... + 3684189.

It is an arithmetic number, because the mean of its divisors is an integer number (5062340592).

Almost surely, 2^102001140554 is an apocalyptic number.

102001140554 is a deficient number, since it is larger than the sum of its proper divisors (59993758390).

102001140554 is a wasteful number, since it uses less digits than its factorization.

102001140554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28982.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 102001140554 its reverse (455041100201), we get a palindrome (557042240755).

The spelling of 102001140554 in words is "one hundred two billion, one million, one hundred forty thousand, five hundred fifty-four".