151142421 has 8 divisors (see below), whose sum is σ = 202637344. Its totient is φ = 100204560.

The previous prime is 151142413. The next prime is 151142423. The reversal of 151142421 is 124241151.

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

It is not a de Polignac number, because 151142421 - 2³ = 151142413 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 (151142423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138631 + ... + 139716.

It is an arithmetic number, because the mean of its divisors is an integer number (25329668).

Almost surely, 2^151142421 is an apocalyptic number.

It is an amenable number.

151142421 is a deficient number, since it is larger than the sum of its proper divisors (51494923).

151142421 is a wasteful number, since it uses less digits than its factorization.

151142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278531.

The product of its digits is 320, while the sum is 21.

The square root of 151142421 is about 12293.9993899463. Note that the first 3 decimals coincide. The cubic root of 151142421 is about 532.6747672948.

Adding to 151142421 its reverse (124241151), we get a palindrome (275383572).

The spelling of 151142421 in words is "one hundred fifty-one million, one hundred forty-two thousand, four hundred twenty-one".