136474021 has 8 divisors (see below), whose sum is σ = 139004640. Its totient is φ = 133950768.

The previous prime is 136474003. The next prime is 136474027. The reversal of 136474021 is 120474631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136474021 - 2¹⁹ = 135949733 is a prime.

It is a super-3 number, since 3×136474021³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136474027) 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, 47395 + ... + 50191.

It is an arithmetic number, because the mean of its divisors is an integer number (17375580).

Almost surely, 2^136474021 is an apocalyptic number.

It is an amenable number.

136474021 is a deficient number, since it is larger than the sum of its proper divisors (2530619).

136474021 is an equidigital number, since it uses as much as digits as its factorization.

136474021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 136474021 is about 11682.2095940794. The cubic root of 136474021 is about 514.8530966301.

The spelling of 136474021 in words is "one hundred thirty-six million, four hundred seventy-four thousand, twenty-one".