145241940 has 24 divisors (see below), whose sum is σ = 406677600. Its totient is φ = 38731168.

The previous prime is 145241933. The next prime is 145241953. The reversal of 145241940 is 49142541.

It is a super-2 number, since 2×145241940² = 42190442269927200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 145241898 and 145241907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210290 + ... + 1210409.

It is an arithmetic number, because the mean of its divisors is an integer number (16944900).

Almost surely, 2^145241940 is an apocalyptic number.

145241940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145241940 is an abundant number, since it is smaller than the sum of its proper divisors (261435660).

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

145241940 is a wasteful number, since it uses less digits than its factorization.

145241940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420711 (or 2420709 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 145241940 is about 12051.6364034101. The cubic root of 145241940 is about 525.6508209884.

The spelling of 145241940 in words is "one hundred forty-five million, two hundred forty-one thousand, nine hundred forty".