11142154420 has 24 divisors (see below), whose sum is σ = 24630026400. Its totient is φ = 4222289952.

The previous prime is 11142154403. The next prime is 11142154423. The reversal of 11142154420 is 2445124111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142154423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14660350 + ... + 14661109.

It is an arithmetic number, because the mean of its divisors is an integer number (1026251100).

Almost surely, 2^11142154420 is an apocalyptic number.

11142154420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11142154420 is an abundant number, since it is smaller than the sum of its proper divisors (13487871980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11142154420 is a wasteful number, since it uses less digits than its factorization.

11142154420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29321487 (or 29321485 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 11142154420 its reverse (2445124111), we get a palindrome (13587278531).

The spelling of 11142154420 in words is "eleven billion, one hundred forty-two million, one hundred fifty-four thousand, four hundred twenty".