151201421 has 16 divisors (see below), whose sum is σ = 177724800. Its totient is φ = 125955648.

The previous prime is 151201409. The next prime is 151201439. The reversal of 151201421 is 124102151.

It is not a de Polignac number, because 151201421 - 2⁶ = 151201357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151201421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151201441) 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 15 ways as a sum of consecutive naturals, for example, 38570 + ... + 42308.

It is an arithmetic number, because the mean of its divisors is an integer number (11107800).

Almost surely, 2^151201421 is an apocalyptic number.

It is an amenable number.

151201421 is a deficient number, since it is larger than the sum of its proper divisors (26523379).

151201421 is a wasteful number, since it uses less digits than its factorization.

151201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 151201421 is about 12296.3987004326. The cubic root of 151201421 is about 532.7440699710.

Adding to 151201421 its reverse (124102151), we get a palindrome (275303572).

The spelling of 151201421 in words is "one hundred fifty-one million, two hundred one thousand, four hundred twenty-one".