150721834 has 4 divisors (see below), whose sum is σ = 226082754. Its totient is φ = 75360916.

The previous prime is 150721819. The next prime is 150721849. The reversal of 150721834 is 438127051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 438127051 = 281 ⋅1559171.

It is an interprime number because it is at equal distance from previous prime (150721819) and next prime (150721849).

It can be written as a sum of positive squares in only one way, i.e., 75951225 + 74770609 = 8715^2 + 8647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 150721796 and 150721805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37680457 + ... + 37680460.

Almost surely, 2^150721834 is an apocalyptic number.

150721834 is a deficient number, since it is larger than the sum of its proper divisors (75360920).

150721834 is an equidigital number, since it uses as much as digits as its factorization.

150721834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75360919.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 150721834 is about 12276.8820960373. The cubic root of 150721834 is about 532.1802134107.

Adding to 150721834 its reverse (438127051), we get a palindrome (588848885).

The spelling of 150721834 in words is "one hundred fifty million, seven hundred twenty-one thousand, eight hundred thirty-four".