151263421 has 8 divisors (see below), whose sum is σ = 155252160. Its totient is φ = 147325728.

The previous prime is 151263419. The next prime is 151263451. The reversal of 151263421 is 124362151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151263421 - 2¹ = 151263419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151263401) 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 7 ways as a sum of consecutive naturals, for example, 6721 + ... + 18646.

It is an arithmetic number, because the mean of its divisors is an integer number (19406520).

Almost surely, 2^151263421 is an apocalyptic number.

It is an amenable number.

151263421 is a deficient number, since it is larger than the sum of its proper divisors (3988739).

151263421 is an equidigital number, since it uses as much as digits as its factorization.

151263421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25523.

The product of its digits is 1440, while the sum is 25.

The square root of 151263421 is about 12298.9195053875. The cubic root of 151263421 is about 532.8168770881.

The spelling of 151263421 in words is "one hundred fifty-one million, two hundred sixty-three thousand, four hundred twenty-one".