140121954 has 32 divisors (see below), whose sum is σ = 355866240. Its totient is φ = 40034736.

The previous prime is 140121937. The next prime is 140122001. The reversal of 140121954 is 459121041.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 184969 + ... + 185724.

It is an arithmetic number, because the mean of its divisors is an integer number (11120820).

Almost surely, 2^140121954 is an apocalyptic number.

140121954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140121954 is an abundant number, since it is smaller than the sum of its proper divisors (215744286).

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

140121954 is a wasteful number, since it uses less digits than its factorization.

140121954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370711 (or 370705 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 140121954 is about 11837.3119414840. The cubic root of 140121954 is about 519.4001391473.

Adding to 140121954 its reverse (459121041), we get a palindrome (599242995).

The spelling of 140121954 in words is "one hundred forty million, one hundred twenty-one thousand, nine hundred fifty-four".