144212394 has 32 divisors (see below), whose sum is σ = 321468480. Its totient is φ = 42861312.

The previous prime is 144212371. The next prime is 144212401. The reversal of 144212394 is 493212441.

It is a super-2 number, since 2×144212394² = 41594429166422472, which contains 22 as substring.

It is a Curzon 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, 35269 + ... + 39144.

It is an arithmetic number, because the mean of its divisors is an integer number (10045890).

Almost surely, 2^144212394 is an apocalyptic number.

144212394 is an abundant number, since it is smaller than the sum of its proper divisors (177256086).

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

144212394 is a wasteful number, since it uses less digits than its factorization.

144212394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74454.

The product of its digits is 6912, while the sum is 30.

The square root of 144212394 is about 12008.8464891512. The cubic root of 144212394 is about 524.4058512043.

The spelling of 144212394 in words is "one hundred forty-four million, two hundred twelve thousand, three hundred ninety-four".