152420121 has 48 divisors (see below), whose sum is σ = 258026496. Its totient is φ = 84911328.

The previous prime is 152420117. The next prime is 152420123. The reversal of 152420121 is 121024251.

152420121 is a `hidden beast` number, since 1 + 524 + 20 + 121 = 666.

It is not a de Polignac number, because 152420121 - 2² = 152420117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152420094 and 152420103.

It is not an unprimeable number, because it can be changed into a prime (152420123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 538446 + ... + 538728.

It is an arithmetic number, because the mean of its divisors is an integer number (5375552).

Almost surely, 2^152420121 is an apocalyptic number.

It is an amenable number.

152420121 is a deficient number, since it is larger than the sum of its proper divisors (105606375).

152420121 is a wasteful number, since it uses less digits than its factorization.

152420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 152420121 is about 12345.8544054269. The cubic root of 152420121 is about 534.1715667212.

Adding to 152420121 its reverse (121024251), we get a palindrome (273444372).

The spelling of 152420121 in words is "one hundred fifty-two million, four hundred twenty thousand, one hundred twenty-one".