145215430 has 32 divisors (see below), whose sum is σ = 270397440. Its totient is φ = 56116320.

The previous prime is 145215419. The next prime is 145215431. The reversal of 145215430 is 34512541.

It is a happy number.

It is a super-2 number, since 2×145215430² = 42175042220169800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145215395 and 145215404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145215431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35175 + ... + 39085.

It is an arithmetic number, because the mean of its divisors is an integer number (8449920).

Almost surely, 2^145215430 is an apocalyptic number.

145215430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145215430 is a deficient number, since it is larger than the sum of its proper divisors (125182010).

145215430 is a wasteful number, since it uses less digits than its factorization.

145215430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145215430 is about 12050.5365025795. The cubic root of 145215430 is about 525.6188379144.

Adding to 145215430 its reverse (34512541), we get a palindrome (179727971).

The spelling of 145215430 in words is "one hundred forty-five million, two hundred fifteen thousand, four hundred thirty".