13542021040 has 40 divisors (see below), whose sum is σ = 31864554288. Its totient is φ = 5351543040.

The previous prime is 13542021037. The next prime is 13542021067. The reversal of 13542021040 is 4012024531.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013091 + ... + 1026370.

Almost surely, 2^13542021040 is an apocalyptic number.

13542021040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13542021040 is an abundant number, since it is smaller than the sum of its proper divisors (18322533248).

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

13542021040 is a wasteful number, since it uses less digits than its factorization.

13542021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039557 (or 2039551 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 13542021040 its reverse (4012024531), we get a palindrome (17554045571).

The spelling of 13542021040 in words is "thirteen billion, five hundred forty-two million, twenty-one thousand, forty".