151212340 has 48 divisors (see below), whose sum is σ = 327901392. Its totient is φ = 58530816.

The previous prime is 151212337. The next prime is 151212353. The reversal of 151212340 is 43212151.

It can be written as a sum of positive squares in 8 ways, for example, as 5189284 + 146023056 = 2278^2 + 12084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171982 + ... + 172858.

It is an arithmetic number, because the mean of its divisors is an integer number (6831279).

Almost surely, 2^151212340 is an apocalyptic number.

151212340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151212340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163950696).

151212340 is an abundant number, since it is smaller than the sum of its proper divisors (176689052).

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

151212340 is a wasteful number, since it uses less digits than its factorization.

151212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 151212340 is about 12296.8426842015. The cubic root of 151212340 is about 532.7568936875.

Adding to 151212340 its reverse (43212151), we get a palindrome (194424491).

The spelling of 151212340 in words is "one hundred fifty-one million, two hundred twelve thousand, three hundred forty".