133879040 has 36 divisors (see below), whose sum is σ = 320685204. Its totient is φ = 53551104.

The previous prime is 133879037. The next prime is 133879043. The reversal of 133879040 is 40978331.

It is an interprime number because it is at equal distance from previous prime (133879037) and next prime (133879043).

It can be written as a sum of positive squares in 2 ways, for example, as 55591936 + 78287104 = 7456^2 + 8848^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133879043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51017 + ... + 53576.

Almost surely, 2^133879040 is an apocalyptic number.

133879040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133879040 is an abundant number, since it is smaller than the sum of its proper divisors (186806164).

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

133879040 is an equidigital number, since it uses as much as digits as its factorization.

133879040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104614 (or 104600 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 133879040 is about 11570.6110469586. The cubic root of 133879040 is about 511.5689731797.

The spelling of 133879040 in words is "one hundred thirty-three million, eight hundred seventy-nine thousand, forty".