145621514734142 has 4 divisors (see below), whose sum is σ = 218432272101216. Its totient is φ = 72810757367070.

The previous prime is 145621514734141. The next prime is 145621514734193. The reversal of 145621514734142 is 241437415126541.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145621514734141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36405378683534 + ... + 36405378683537.

It is an arithmetic number, because the mean of its divisors is an integer number (54608068025304).

Almost surely, 2^{145621514734142} is an apocalyptic number.

145621514734142 is a deficient number, since it is larger than the sum of its proper divisors (72810757367074).

145621514734142 is an equidigital number, since it uses as much as digits as its factorization.

145621514734142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72810757367073.

The product of its digits is 3225600, while the sum is 50.

The spelling of 145621514734142 in words is "one hundred forty-five trillion, six hundred twenty-one billion, five hundred fourteen million, seven hundred thirty-four thousand, one hundred forty-two".