151121943 has 24 divisors (see below), whose sum is σ = 258713728. Its totient is φ = 86354424.

The previous prime is 151121939. The next prime is 151121963. The reversal of 151121943 is 349121151.

It is a happy number.

It is not a de Polignac number, because 151121943 - 2² = 151121939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151121903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42721 + ... + 46122.

Almost surely, 2^151121943 is an apocalyptic number.

151121943 is a deficient number, since it is larger than the sum of its proper divisors (107591785).

151121943 is an frugal number, since it uses more digits than its factorization.

151121943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88865 (or 88853 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 151121943 is about 12293.1665164025. The cubic root of 151121943 is about 532.6507091769.

The spelling of 151121943 in words is "one hundred fifty-one million, one hundred twenty-one thousand, nine hundred forty-three".