145777542 has 32 divisors (see below), whose sum is σ = 307272960. Its totient is φ = 46015200.

The previous prime is 145777529. The next prime is 145777543. The reversal of 145777542 is 245777541.

It is a junction number, because it is equal to n+sod(n) for n = 145777494 and 145777503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145777543) 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, 8709 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (9602280).

Almost surely, 2^145777542 is an apocalyptic number.

145777542 is an abundant number, since it is smaller than the sum of its proper divisors (161495418).

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

145777542 is a wasteful number, since it uses less digits than its factorization.

145777542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588.

The product of its digits is 274400, while the sum is 42.

The square root of 145777542 is about 12073.8370868585. The cubic root of 145777542 is about 526.2961677909.

Subtracting 145777542 from its reverse (245777541), we obtain a palindrome (99999999).

The spelling of 145777542 in words is "one hundred forty-five million, seven hundred seventy-seven thousand, five hundred forty-two".