150421215 has 16 divisors (see below), whose sum is σ = 275056128. Its totient is φ = 68763936.

The previous prime is 150421211. The next prime is 150421241. The reversal of 150421215 is 512124051.

It is not a de Polignac number, because 150421215 - 2² = 150421211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 150421191 and 150421200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150421211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716187 + ... + 716396.

It is an arithmetic number, because the mean of its divisors is an integer number (17191008).

Almost surely, 2^150421215 is an apocalyptic number.

150421215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

150421215 is a deficient number, since it is larger than the sum of its proper divisors (124634913).

150421215 is a wasteful number, since it uses less digits than its factorization.

150421215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432598.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 150421215 is about 12264.6326891595. The cubic root of 150421215 is about 531.8261617089.

Adding to 150421215 its reverse (512124051), we get a palindrome (662545266).

The spelling of 150421215 in words is "one hundred fifty million, four hundred twenty-one thousand, two hundred fifteen".