151134421 has 4 divisors (see below), whose sum is σ = 151379200. Its totient is φ = 150889644.

The previous prime is 151134409. The next prime is 151134433. The reversal of 151134421 is 124431151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (151134409) and next prime (151134433).

It is a cyclic number.

It is not a de Polignac number, because 151134421 - 2⁹ = 151133909 is a prime.

It is a super-2 number, since 2×151134421² = 45683226422010482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151134392 and 151134401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151134461) 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, 121461 + ... + 122698.

It is an arithmetic number, because the mean of its divisors is an integer number (37844800).

Almost surely, 2^151134421 is an apocalyptic number.

It is an amenable number.

151134421 is a deficient number, since it is larger than the sum of its proper divisors (244779).

151134421 is an equidigital number, since it uses as much as digits as its factorization.

151134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244778.

The product of its digits is 480, while the sum is 22.

The square root of 151134421 is about 12293.6740236595. The cubic root of 151134421 is about 532.6653689334.

Adding to 151134421 its reverse (124431151), we get a palindrome (275565572).

The spelling of 151134421 in words is "one hundred fifty-one million, one hundred thirty-four thousand, four hundred twenty-one".