153145421 has 8 divisors (see below), whose sum is σ = 179919264. Its totient is φ = 128513520.

The previous prime is 153145387. The next prime is 153145427. The reversal of 153145421 is 124541351.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153145421 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 (153145427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535331 + ... + 535616.

It is an arithmetic number, because the mean of its divisors is an integer number (22489908).

Almost surely, 2^153145421 is an apocalyptic number.

153145421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

153145421 is a deficient number, since it is larger than the sum of its proper divisors (26773843).

153145421 is a wasteful number, since it uses less digits than its factorization.

153145421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070971.

The product of its digits is 2400, while the sum is 26.

The square root of 153145421 is about 12375.1937762606. The cubic root of 153145421 is about 535.0175217716.

Adding to 153145421 its reverse (124541351), we get a palindrome (277686772).

The spelling of 153145421 in words is "one hundred fifty-three million, one hundred forty-five thousand, four hundred twenty-one".