150621140 has 12 divisors (see below), whose sum is σ = 316304436. Its totient is φ = 60248448.

The previous prime is 150621137. The next prime is 150621143. The reversal of 150621140 is 41126051.

It is an interprime number because it is at equal distance from previous prime (150621137) and next prime (150621143).

It can be written as a sum of positive squares in 2 ways, for example, as 118766404 + 31854736 = 10898^2 + 5644^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 7531057 = 150621140 / (1 + 5 + 0 + 6 + 2 + 1 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150621143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765509 + ... + 3765548.

It is an arithmetic number, because the mean of its divisors is an integer number (26358703).

Almost surely, 2^150621140 is an apocalyptic number.

150621140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

150621140 is an abundant number, since it is smaller than the sum of its proper divisors (165683296).

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

150621140 is a wasteful number, since it uses less digits than its factorization.

150621140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7531066 (or 7531064 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 150621140 is about 12272.7804510632. The cubic root of 150621140 is about 532.0616743092.

Adding to 150621140 its reverse (41126051), we get a palindrome (191747191).

The spelling of 150621140 in words is "one hundred fifty million, six hundred twenty-one thousand, one hundred forty".