133551942 has 16 divisors (see below), whose sum is σ = 267347520. Its totient is φ = 44476712.

The previous prime is 133551941. The next prime is 133551953. The reversal of 133551942 is 249155331.

It is a super-2 number, since 2×133551942² = 35672242423942728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133551941) 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, 2592 + ... + 16547.

It is an arithmetic number, because the mean of its divisors is an integer number (16709220).

Almost surely, 2^133551942 is an apocalyptic number.

133551942 is an abundant number, since it is smaller than the sum of its proper divisors (133795578).

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

133551942 is a wasteful number, since it uses less digits than its factorization.

133551942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20307.

The product of its digits is 16200, while the sum is 33.

The square root of 133551942 is about 11556.4675398670. The cubic root of 133551942 is about 511.1520056161.

The spelling of 133551942 in words is "one hundred thirty-three million, five hundred fifty-one thousand, nine hundred forty-two".