105240155421 has 16 divisors (see below), whose sum is σ = 143468575488. Its totient is φ = 68589312000.

The previous prime is 105240155387. The next prime is 105240155441. The reversal of 105240155421 is 124551042501.

It is not a de Polignac number, because 105240155421 - 2¹¹ = 105240153373 is a prime.

It is a super-2 number, since 2×105240155421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105240155441) 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, 299380 + ... + 547821.

It is an arithmetic number, because the mean of its divisors is an integer number (8966785968).

Almost surely, 2^105240155421 is an apocalyptic number.

It is an amenable number.

105240155421 is a deficient number, since it is larger than the sum of its proper divisors (38228420067).

105240155421 is an equidigital number, since it uses as much as digits as its factorization.

105240155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848132.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 105240155421 its reverse (124551042501), we get a palindrome (229791197922).

The spelling of 105240155421 in words is "one hundred five billion, two hundred forty million, one hundred fifty-five thousand, four hundred twenty-one".