134445540 has 24 divisors (see below), whose sum is σ = 376447680. Its totient is φ = 35852128.

The previous prime is 134445527. The next prime is 134445547. The reversal of 134445540 is 45544431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 134445498 and 134445507.

It is not an unprimeable number, because it can be changed into a prime (134445547) 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, 1120320 + ... + 1120439.

It is an arithmetic number, because the mean of its divisors is an integer number (15685320).

Almost surely, 2^134445540 is an apocalyptic number.

134445540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134445540 is an abundant number, since it is smaller than the sum of its proper divisors (242002140).

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

134445540 is a wasteful number, since it uses less digits than its factorization.

134445540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240771 (or 2240769 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 134445540 is about 11595.0653296995. The cubic root of 134445540 is about 512.2895141990.

Adding to 134445540 its reverse (45544431), we get a palindrome (179989971).

The spelling of 134445540 in words is "one hundred thirty-four million, four hundred forty-five thousand, five hundred forty".