152117421 has 8 divisors (see below), whose sum is σ = 207770304. Its totient is φ = 98938080.

The previous prime is 152117417. The next prime is 152117447. The reversal of 152117421 is 124711251.

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

It is not a de Polignac number, because 152117421 - 2² = 152117417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152117391 and 152117400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152117491) 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, 618241 + ... + 618486.

It is an arithmetic number, because the mean of its divisors is an integer number (25971288).

Almost surely, 2^152117421 is an apocalyptic number.

It is an amenable number.

152117421 is a deficient number, since it is larger than the sum of its proper divisors (55652883).

152117421 is a wasteful number, since it uses less digits than its factorization.

152117421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236771.

The product of its digits is 560, while the sum is 24.

The square root of 152117421 is about 12333.5891369868. The cubic root of 152117421 is about 533.8177182279.

Adding to 152117421 its reverse (124711251), we get a palindrome (276828672).

The spelling of 152117421 in words is "one hundred fifty-two million, one hundred seventeen thousand, four hundred twenty-one".