145542480 has 80 divisors (see below), whose sum is σ = 452393664. Its totient is φ = 38707200.

The previous prime is 145542437. The next prime is 145542517. The reversal of 145542480 is 84245541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×145542480² = 42365226969100800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137955 + ... + 139005.

Almost surely, 2^145542480 is an apocalyptic number.

145542480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145542480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226196832).

145542480 is an abundant number, since it is smaller than the sum of its proper divisors (306851184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145542480 is a wasteful number, since it uses less digits than its factorization.

145542480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 145542480 is about 12064.0988059614. The cubic root of 145542480 is about 526.0131365781.

The spelling of 145542480 in words is "one hundred forty-five million, five hundred forty-two thousand, four hundred eighty".